Chemical Guide

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Chemical Guide

This list is fully protected by copyright. No part of it may be This chemical list is developed as a guideline to assist in reproduced in any forms or by any means – print, digital, the safe use and operation of ductless fume hoods. It is or mechanical including but not limited to photocopying, intended to assist in the control of health hazards and recording, or taping – without the written permission of Air should only be interpreted and applied by a person trained Science®. in an industrial hygiene discipline. It provides a philosoph- ical and practical basis for the uses and limitations of The operative source for Threshold Limit Values (TLV) is the carbon filters. American Conference of Governmental Industrial Hygienists (ACGIH). This resource is meant as a rough guide only. The information presented was gathered from the best avail- Always refer to the most current edition of “Threshold Limit able sources, including information from carbon suppliers, Values for Chemicals Substances and Physical Agents and results from in-house and external testing performed under Biological Exposure Indices” before using this chemical dynamic conditions, extrapolation from other available listing. data, and extensive engineering judgment. Actual values achieved will vary depending on environmental and opera- Ductless fume hoods provide operator protection. Use of tional conditions. All information is believed to be accurate hazardous material in these cabinets must be monitored as of printing date. We are not responsible for typographical by a qualified safety officer. Ductless fume hoods are not errors. While updates to this list are continuous, it is the intended for use with explosive, flammable or radiological responsibility of the user to contact us for the most current materials unless approved by a qualified safety officer data. following risk evaluation. Contact Air Science at info@airscience.com or 800.306.0656 for questions about individual applications. p:2 Chemical Guide

How to Use this Guide Filter Options

Filter Type / Formula Description Introduction PRE-Filter Filtrete high performance electrostatic material designed to remove Air Science Ductless Fume Hoods are a viable alternative to conventional fume particulates from the air stream, including aerosols and mists. 99% hoods that provide protection from toxic fumes to both laboratory personnel and the efficient for particle size 0.5 micron. Required on all units. environment. HEPA Filter A high-efficiency particulate air filter removes powders and particulates. Unlike conventional fume hoods, these cabinets filter out chemical fumes and recycle air directly back to the laboratory, providing energy savings, personnel and environ- GP Plus! Filter The most widely used filter in the range, primarily for solvent, organic, and alcohol fume removal. It is manufactured from mental protection. As there is no need for complicated ducting systems ductless fume coconut shell based activated carbon of 5-10 mesh. hoods are more convenient and more mobile. ACI Plus! Filter This alkali impregnated filter will neutralize volatile inorganic acid vapors, such as hydrochloric and hydrofluoric acids and acid gases You might have concerns over which filters to choose for specific chemicals, as there such as Sulphur and nitrogen dioxides. are hundreds of different types of activated carbon in the world and each is made for ACR Filter This filter is impregnated with halide salts and is used for the high different specific applications. Air Science has developed this Chemical Reference List efficiency removal of iodine and methyl iodide. It is frequently used to simplify the decision making process. This Chemical Reference List, combined with for iodination reactions with low level radioactive iodine. Efficiencies our Application Assessment Form, will ensure that you are using the right filter for your in excess of 99.99% have been measured. application. ACM Filter This filter is impregnated with iodine compounds for removal of mercury vapor. The filter has been demonstrated to remove mercury from a saturated air stream at ambient temperature to below 5 ppb How to use the Chemical Reference List in the exhaust air stream. Step 1 AMM Filter This filter is impregnated with copper compounds to efficiently remove vapor from dilute ammonia solutions, and to remove low Identify the chemicals most commonly used for your applications. The Chemicals molecular weight amines. are listed in alphabetical order. SUL Filter This is a potassium iodide impregnated filter designed to remove Step 2 hydrogen sulphide and low molecular weight mercaptans. For each Chemical, follow the row across for: CYN Filter This is a multi-impregnated filter to a military specification, for removal of hydrogen cyanide gas. Many cyanide compounds will evolve HCN gas if acidified, so this filter is normally specified if • Substance Characteristics working with any cyanide compound. • Comments (filtration notes and health affects) FOR Filter This filter is impregnated with an oxidizing agent to oxidize formaldehyde and glutaraldehyde fumes. It is widely used in hospitals • Recommended Filter Selection pathology laboratories and endoscopy units. ETH Filter Diethyl ether is adsorbed on activated carbon but because of its low boiling point, the local heat adsorption can reduce the capacity of the filter. Special impregnation allows a chemical reaction which increases the filter capacity. EDU Filter This multi-layered filter is designed to handle chemicals normally used in a university level chemistry curriculum. MIL Filter This multi-layered filter is designed to handle chemicals normally found in military or Department of Defense applications.

Air Science 120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com p:3 Chemical Guide

Filter Configurations Carbon Filtration Introduction

Filters can be ordered in the following configurations: Fume hoods provide protection from fumes and vapors that are created by processes in the biotechnology, life sciences, forensic, and pharmaceutical industries. Fume Single One type of activated carbon. hoods can be ducted into an existing HVAC system or can be ductless. Blended A single filter with two or more types of carbon blended throughout. Ductless filtration systems provide highly efficient, sustainable protection in portable, Layered A single filter with two or more types of carbon in separate layers. standalone equipment that can fit in nearly any laboratory. The purpose of this appli- Stacked Some units allow for two or more single filters each with a different cation guide is to provide information on the proper use of the ductless fume hood. type of carbon.

In addition to energy efficiency, capital investment savings and customizable filtration, ductless hoods can be designed for equivalent or safer performance than ducted Definitions Health Effects Abbreviations hoods. • OSHA TLV – Occupational Safety and • CNS – central nervous system Health Administration Threshold Limit • CVS – cardiovascular system There are, however, limitations to ductless technology and possible safety conse- Values quences from the misuse of ductless fume hoods. It is important to know recom- • CWP – coal workers’ pneumoconiosis • NIOSH TLV – National Institute for mended guidelines for ductless fume hoods and appropriate carbon filtration. Occupational Safety and Health • GI – gastrointestinal Threshold Limit Values Ductless vs. Ducted • TWA – Time Weighted Average Filter Recommendation System Laboratory ventilation should be examined from an overall perspective to achieve the • VME – Limit value in France (Valeur • × – Suitable for the primary carbon proper balance in terms of protection and cost. The table below summarizes the pros limite Moyenne d’Exposition) filter if installed and monitored and cons of ducted versus ductless fume hoods. properly, according to manufacturer • MAK – Limit Value in Germany specifications. Table 1 - Hood Type Comparison (Maximale Arbeitsplatz-Konzentration) • NR – Not suitable for ductless fume Ductless Fume Hood Conventional (Vented) Fume Hood • Olf – Olfactroy detection thresholds hood use. Call Air Science to discuss Handles limited quantity of chemicals Handles unlimited chemical quantity options for this type of chemical • ppm – parts of vapor or gas per million containment / protection. Handles limited types of chemicals Handles larger number of chemicals parts of contaminated air by volume Proper filters need to be used Does not utilize filters • Please call for details – This application • mg/m3 – milligrams of substance per can be suitable in certain instances Filters need to be closely monitored Does not utilize filters cubic meter of air but needs a thorough review to ensure No installation cost or ductwork Expensive installation and ductwork • f/cc – fibers per cubic centimeter fibers all safety precautions are followed. Flexibility in location of fume hood, can be Generally located on outside wall and difficult per cubic centimeter placed at point of actual use to move for relocation No loss of conditioned air Extensive make-up air required Substance Characteristics Fumes captured within filter and oxidized or Pollutants released to atmosphere in uncon- Definitions neutralized trolled fashion. • MW – Molecular Weight The conventional ducted fume hood is important for handling large quantities or • Bp – Boiling Point difficult to handle chemicals. Ductless fume hoods, however, provide point of use • Mp – Melting Point protection at minimal costs without releasing dangerous toxins into the atmosphere. On the other hand, ductless fume hoods are limited in terms of the chemicals, and SG – • Specific Gravity the quantities of those chemicals, they can handle. p:4 Chemical Guide

Use of the Guide Factors That Affect Adsorption Efficiency The ability of a filter to function efficiently is dependent on a number of factors The use of activated carbon filters in ductless mode is dependent on the chemicals including: temperature, humidity, residence time, age of filter, evaporation rate being used and the quantity of chemical being evaporated into the filter. Generally and concentration. speaking, chemicals with a molecular weight over 30 and a boiling point higher than 60°C (140°F) are candidates for adsorption with carbon filters. Yet there are excep- Temperature tions and combinations which need to be evaluated by your supplier. The temperature of the gas is very important. The higher the temperature, the lower Carbon filters have pre-determined retention capacities. Your supplier should be the adsorption capacity, especially for a gas with a low boiling point. As a general able to predict the amount of chemical in grams or milliliters that is capable of being rule temperature must be kept below 40°C (104°F). retained by the filter, prior to any measurable desorption taking place. This is done by Humidity using data from the carbon supplier, testing under dynamic conditions, extrapolation from available data, and engineering judgement. The attached chemical listing is an Relative humidity is also an important factor that can affect the efficiency of the filter. example of how this can be done to provide the user with necessary information to The molecules of gases with low boiling points will be less readily adsorbed, because ensure the safe use of a ductless fume hood equipped with activated carbon filters. the molecules of the water vapor will be adsorbed in their place, leaving less free surface in the pores for the gas molecules to impact the carbon. As a general rule, the relative humidity must always be kept below 60%. Filtration Technology Residence Time The main principle on which the filtration of gas molecules is based is the concept of adsorption. Two main processes by which adsorption takes place are physical Residence time is the time needed by the air to cross the filter, during which it stays adsorption and chemisorption. Physical adsorption is non-specific; adsorption of the in contact with the carbon itself. This is the time during which the molecules of gas gas molecule is by diffusion (Brownian Movement) or adsorption /condensation using can be adsorbed by the pores of the carbon and should be as long as possible. To Van der Waal forces. The gas molecules move into an empty area and diffuse into the maximize residence time, the thickness of the filter must be sufficient and the air speed pore. Attracted and captured in the space by the Van der Waal force, the molecules crossing it must be kept to a minimum. This minimum is influenced by the fact that the penetrate into the pores, impact the walls and are trapped. The number of pores air speed across the front opening of the fume hood (face velocity) must be kept at a present in the carbon is vast and therefore the total surface area is extremely large. rate sufficient to insure containment of the fumes within the enclosure.

The physical process of adsorption is followed by chemical adsorption (chemisorp- Filter Age, Evaporation Rate, and Concentration tion). This is a chemical reaction in which the two substances react together and the Carbon filters, if not properly stored before use, become less efficient with time. resultant chemical is trapped on the filter material. The impregnation of filter media Additionally, the rate at which the chemical is being evaporated and the concentra- can greatly extend the range of gases that can be removed from the air. In all, over tion of chemical vapors within the enclosure will likewise impact efficiency with the a dozen different filter impregnations are used on the filters included in our chemical higher evaporation and concentration having a negative impact on efficiency. listing (see Filter Summary Table).

Do’s and Don’ts The retention values listed are intended as guidelines only and are subject to varia- tions from a number of factors previously discussed. When using a number of different chemicals, the retention capacities are not additive but a weighted average needs to be calculated. Activated carbon filters are not recommended for use where very large quantities of contaminates or highly toxic substances are produced, such as in acid digestions or evaporation of solvents to dryness. The recommended filter is the main single layer filter to be used for the application. In cases where more than one chemical family is involved it may be possible to use a multi-layered filter. All these cases should be discussed with your supplier to validate the choice of an appropriate filter.

Air Science 120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com p:5 Chemical Guide

™ Multiplex Filtration System Multiplex Filtration System, Summary The Air Science Multiplex™ Filtration System consists of a pre-filter, main filter and Filter Type Filter Function optional safety filter to create a combination of chemical and physical architecture customized to each application. The mechanical design enhances safety, conve- Standard Filters nience and overall value. The electrostatic pre-filter is accessible from within the cabi- Pre-Filter Electrostatic Protects the main filter from aerosols, mists, dust and particu- net. A filter clamping mechanism allows for the filter to be easily installed and ensures lates. Pre-filter efficiency is typically 95.5% or greater down to an even seal at the filter peripheral face at all times to prevent bypass leakage. 0.5 microns. Main Filter HEPA A self-contained HEPA filter physically captures larger than 0.3 The Air Science carbon filtration technique is based on enhanced, activated carbon (ULPA optional) micron particulates. An ULPA filter may be specified to capture particle formulations from specially selected, naturally occurring raw materials particulates larger than 0.12 microns. Specify when ordering. superior to wood or other organic sources. The carbon is treated to attain the proper Main Filter Activated FILTCO™ sourced, the carbon filters contain activated carbon porosity and aggregate surface area and to react with several ranges of aerosolized Carbon granules chemically formulated to capture one or more chemicals moved through the filter by an air handling blower. The multiplex option specific vapors or family of vapors. permits combining one or more filtration choices to meet a wider range of multi- ple-use applications. Safety Filters Multiplexing permits configuration for the capture of acids, bases and particulates, Safety Filter HEPA The safety filter can be a self-contained HEPA filter which such as biological aerosols when paired with HEPA or ULPA filters. The Air Science (HEPA/ULPA) (ULPA optional) physically captures larger than 0.3 micron particulates. An carbon filter is a self-contained assembly that is sized to fit the specified product ULPA filter may be specified to capture particulates larger than 0.12 microns. Specify when ordering. When chosen, the HEPA/ model number. It is configured to optimize airflow across 100% of the filter surface area ULPA safety filter permits the cabinet exhaust to be vented to for maximum efficiency, prolonged filter life and optimal diffusion, saturation capacity the room without external ducting. and user safety. Air Science is the single source supplier for all pre-filters and carbon Safety Filter Activated FILTCO™ sourced, the single carbon filter contains activated filters used in its products, and those of many other manufacturers. (Carbon) Carbon carbon granules chemically formulated to capture one or more specific vapors or family of vapors. When chosen as the Filter Summary safety filter the cabinet must be vented to the outside for USP 800 compliance. Formula Description GP Plus! The most widely used filter in the range, primarily for solvent, organic, and alcohol removal.

ACI Plus! Designed to neutralize volatile inorganic acid vapors.

ACR Iodine and methyl iodide vapors. It is frequently used for iodination reactions with lower level radioactive iodine.

ACM Mercury vapor

AMM Removes vapors from dilute ammonia solutions and to remove low molecular weight amines. SUL Designed to remove hydrogen sulfide and low molecular weight mercaptans.

CYN Removal of hydrogen cyanide. Many cyanide compounds will evolve HCN gas which acidifies, so this filter is normally specified if working with any cyanide compound. FOR Designed to oxidize formaldehyde and glutaraldehyde fumes. It is widely used in hospital pathology laboratories. ETH Diethyl ether is adsorbed on activated carbon, but because of its low boiling point, the local head adsorption can reduce the capacity of the filter. Special impregnation allows a chemical reaction which increases the filter capacity.

HEPA/UPLA Powders and particulates p:6 Chemical Guide

Revolving Filters Safety Standards Air Science strongly discourages the unsafe practice of revolving secondary back-up Users of ductless fume hoods should acquaint themselves with the safety standards filters into the primary filter compartment. All Air Science units are designed to avoid currently applicable within the United States or country of use. this false sense of security. In a revolving filter system, users are instructed to rotate the secondary back-up filter into the primary filter position after non-permissible exposure Filter Monitoring levels of chemicals are detected within the monitoring chamber. Depending on when Refer to ANSI/AIHA Z9.5 with specific reference to section 4.12.4 dealing with activated the unit can be properly shut down, the secondary filter can be loaded to the point carbon filters and ANSI/AIHA Z9.7 entitled “Recirculation of Air from Industrial Process of saturation itself, thereby creating a safety hazard if the filter is considered new. If a and Exhaust Systems.” These are available through the American Industrial Hygiene new spare filter is not immediately available, a user may inadvertently (or knowingly) Association, 2700 Prosperity Avenue, Suite 250, Fairfax, VA 22031. re-install a contaminated primary filter into the secondary location permitting the system to operate without protection. Additionally, the secondary filter can become Fume Hood Performance Testing contaminated as it ages, sometimes for years, on top of an operational cabinet, Refer to ANSI/ASHRAE 110-1985 entitled “Method of Testing Performance of Laboratory losing filter efficiency by the time it is installed. Either practice puts both personnel and Fume Hoods” Available from the American National Standards Institute, Inc. 11 West the environment at risk, even though some manufacturers provide stickers to label the 42nd Street, New York, NY 10036. filters as “used.” The Air Science non-revolving filter practice ensures that only a new filter is fitted into the primary filter compartment, and permits the secondary filter to Requirements for Ventilation Devices remain installed for at least twice the change-out period, resulting in a 50% savings in Refer to Code of Federal Regulations, Title 29, Part 1910 entitled “Occupational filter change-out costs. Exposures to Hazardous Chemicals in Laboratories; Final Rule” OSHA. Available from the U.S. Government Printing Office, Washington, DC 20402-9325.

Filter Monitoring Exposure Limits to Chemical Substances There are two aspects to filter monitoring: checking the airflow to ensure the pre-filter Refer to most current edition of “Threshold Limit Values for Chemical Substances is not clogged with dust and checking the exhaust air for chemical contaminants and Physical Agents and Biological Exposure Indices” available from the American to ensure the main filter has not reached the breakthrough point. The results of the Conference of Governmental Industrial Hygienists, Kemper Woods Center, 1330 filter monitoring should be recorded on a dated log sheet. Airflow can be measured Kemper Meadows Drive, Cincinnati, Ohio 45240. with an anemometer and a number of designs are available including propeller, hot wire, and vane anemometer. In addition, most units are fitted with a low airflow alarm, which indicates a low airflow situation as well as fan failure.

Monitoring can be performed with gas detection tubes. Most units have test ports allowing the use of this equipment in a zone immediately above the main filter. Back-up filters prevent any contamination coming from the main filter from being re-circulated into the work area. A detailed monitoring program is given in the operator’s manual provided with each unit. An electronic filter saturation alarm, which runs continuous monitoring and is sensitive to a wide range of hydrocarbon contaminants, provides a detection sensitivity of a few ppm.

Air Science 120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com p:7 A–Alu Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

) 3

Acetaldehyde [75-07-0] Acetic aldehyde, Ethanal, Ethyl aldehyde CH3CHO 44 0.790 20 -124 25 100 50 0.05 Carcinogen ×

Acetic acid [64-19-7] 2,4,5- Trichlorophenoxyacetic acid CH3Co2H 60 1.050 118 10 10 0.048 Irritation × × Acetic acid anhydride, Acetic oxide, Acetyl Acetic anhydride [108-24-7] (CH CO) O 102 1.080 140 5 5 5 0.13 Irritation × × oxide, Ethanoic anhydride 3 2 Ethyl methyl ketone, MEK, Methyl acetone, Acetone [67-64-1] C H O 58 0.790 57 500 750 500 13 Irritation × × Methyl ethyl ketone 3 6 Cyanohydrin-2-propanone, 2-Cya- no-2-propanol, alpha-Hydroxyisobutyro- Acetone cyanohydrin [75-86-5] , as CN C H NO 85 0.930 82 -20 1 CNS; anoxia Please call to discuss nitrile, 2-Hydroxy-2-methyl-propionitrile, 4 7 2-Methyllactonitrile Cyanomethane, Ethyl nitrile, Methyl cyanide Acetonitrile [75-05-8] C H N 41 0.780 82 40 70 20 34 40 170 Lung; anoxia × × [Note: Forms cyanide in the body.] 2 3 Methyl phenyl ketone, Acetyl benzene, Benzoyl methide, Hypnone, 1-Phenyletha- Acetophenone [98-86-2 ] C H O 120 202 10 Irritation; ocular Please call to discuss none, acetylbenzene,phenyl methyl ketone, 8 8 MPK, PMK Acetylene tetrachloride, Symmetrical Poor odor Acetylene [74-86-2] C H 26 0.001 -84 2500 620 Asphyxiation × × tetrachloroethane 2 2 warning Symmetrical tetrabromoethane; TBE;

Acetylene tetrabromide [79-27-6] Tetrabromoacetylene; Tetrabromoethane; C2H2Br4 346 2.970 239 1 1 Irritation; liver × × 1,1,2,2-Tetrabromoethane

Acetylsalicylic acid (Aspirin) [50-78-2] C9H8O4 180 1.350 135 5 Blood Please call to discuss Acraldehyde, Acrylaldehyde, Acrylic alde- Not Recom- Irritation; pulmo- Acrolein [107-02-8] C H O 56 0.084 53 0.1 0.25 0.1 0.25 0.16 Please call to discuss hyde, Allyl aldehyde, Propenal, 2-Propenal 3 4 mended nary edema Acrylamide monomer, Acrylic amide, Acrylamide [79-06-1] C H NO 71 1.120 85 0.3 0.1 CNS; dermatitis × Propenamide, 2-Propenamide 3 5 Acroleic acid, Aqueous acrylic acid (technical grade is 94%), Ethylenecarboxylic Irritation; Acrylic acid [79-10-7] C H O 72 1.050 142 2 6 0.94 × × acid, Glacial acrylic acid (98% in aqueous 3 4 2 reproductive solution), 2-Propenoic acid Acrylonitrile monomer, AN, Cyanoethylene,

Acrylonitrile [107-13-1] Propenenitrile, 2-Propenenitrile, VCN, Vinyl C3H3N 53 0.081 77 2 2 3 17 Cancer × × cyanide Neurotoxicity; GI; Adipic acid [124-04-9] C H O 146 152 5 × × 6 10 4 irritation 1,4-Dicyanobutane; Hexanedinitrile; Adiponitrile [111-69-3] C H N 108 0.097 295 4 18 Lung Please call to discuss Tetramethylene cyanide 6 8 2 1,2,3,4,10,10-Hexachloro-1,4,4a,5,8,8a-

Aldrin [309-00-2] hexahydro-endo-1,4-exo-5,8-dimeth- C12H8Cl6 365 1.600 105 0.25 0.25 Liver Please call to discuss anonaphthalene; HHDN; Octalene 1,4-Dicyanobutane; Hexanedinitrile; Allyl alcohol [107-18-6] C H O 58 0.850 97 2 5 2 5 2 1.1 Irritation; liver × × Tetramethylene cyanide 3 6 3-Chloroallyl chloride; DCP; 1,3-Dichloro-1- Allyl chloride [107-05-1] C H Cl 77 0.940 45 1 5 1 1.2 Liver × × × × propene; 1,3-Dichloropropylene; Telone® 3 5 Irritation; dermati- Allyl glycidyl ether (AGE) [106-92-3] C H O 114 0.970 154 10 45 5 22 × × 6 10 2 tis; sensitization 4,5-Dithia-1-octene; Onion oil; 2-Propenyl Not Recom- Allyl propyl disulfide [2179-59-1] C H S 148 0.930 2 12 2 12 Irritation Please call to discuss propyl disulfide; Propyl allyl disulfide 6 12 2 mended Aluminum [7429-90-5] Alumina, Aluminum oxide, Aluminum Metal dust 10 Irritation trioxide [Note: alpha-Alumina is the main Pyro powders, as Al 5 Lung component of technical grade alumina. various 27 × Welding fumes, as Al 5 Irritation Corundum is natural Al2O3. Emery is an Soluble salts, as Al 2 Irritation impure crystalline variety of Al2O3.] Alkyls (NOC(d)), as Al 2 Irritation p:8 Alu–Bor Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

) 3

Aluminium oxide [1344-28-1] Al2O3 102 10 Lung; irritation ×

2-Aminopyridine [504-29-0] Alpha-Aminopyridine, alpha-Pyridylamine C5H6N2 91 211.0 0.5 2 0.5 2 0.5 CNS × Aminotriazole; 3-Aminotriazole; 2-Ami- Not Recom- Reproductive; Amitrole [61-82-5] C H N 84 1.140 159 0.2 0.06 Please call to discuss no-1,3,4-triazole; 3-Amino-1,2,4-triazole 2 4 4 mended thyroid Anhydrous ammonia, Aqua ammonia,

Ammonia [7664-41-7] Aqueous ammonia [Note: Often used in an H3N 17 0.001 -33 50 35 25 18 50 5.2 Irritation × × aqueous solution.] Ammonium chloride, Ammonium muriate Ammonium chloride fume [12125-02-9] ClH N 54 10 Irritation × fume, Sal ammoniac fume 4 Amyl acetic ester, Amyl acetic ether, n Amyl acetate, 1-Pentanol acetate, Pentyl ester of acetic C H O 130 0.880 148 100 525 100 525 100 0.054 Irritation × × see NIC for pentyl acetate (all isomers) 7 14 2 acid, Primary amyl acetate sec-Amyl acetate, see NIC for pentyl 1-Methylbutyl acetate, 2-Pentanol acetate, C H O 130 0.570 123 125 650 125 650 100 0.002 Irritation × × acetate (all isomers) 2-Pentyl ester of acetic acid 7 14 2 Fermentation amyl alcohol, Fusel oil, n Amyl Alcohol (71-41-0) Isobutyl carbinol, Isopentyl alcohol, C5H12O 88 138 100 360 100 360 Fire Risk × × 3-Methyl-1-butanol, Primary isoamyl alcohol DACPM; 3,3’-Dichloro-4,4’-diaminodi- phenylmethane; MBOCA; 4,4’-Methylen- Aniline [62-53-3] and homologues C H N 93 1.020 184 0.003 2 1.1 Anoxia × ebis(o-chloro aniline); 4,4’-Methylenebi- 6 7 s(2-chlorobenzenamine); MOCA p-Methoxybenzaldehyde * 4-Methoxybenz- Anisidine [90 04 0] C H NO 123 1.100 225 0.5 0.5 0.1 Anoxia Please call to discuss aldehyde, p-anisaldehyde 7 9 Antimony [ 7440-36-0] para-Aminoanisole, 4-Anisidine, Irritation; lung; Sb 122 0.5 × and compounds, as Sb p-Methoxyaniline CVS Not Recom- Arsine [7784-42-1] Varies depending on compound AsH 78 0.003 -63 0.002 0.05 0.05 0.5 Blood; kidney NR 3 mended Arsenic hydride, Arsenic trihydride, Asbestosis.; Asbestos, all forms [1332-21-4] Arseniuretted hydrogen, Arsenous hydride, CaMg (SiO ) × 3 3 4 cancer Hydrogen arsenide Irritation; GI; Barium [7440-39-3] Varies depending on compound Ba 137 1640 0.5 burns; muscle × and soluble compounds, as Ba toxin Artificial barite, Barite, Barium salt of Pneumoconiosis Barium sulfate [7727-43-7] BaO S 233 1580 15 10 × sulfuric acid, Barytes (natural) 4 (baritosis) Methyl 1-(butylcarbamoyl)-2-benzimid- Dermatitis; Benomyl [17804-35-2] C H N O 290 0.84 0.8 Please call to discuss azolecarbamate 14 18 4 3 irritation

Benzene [71-43-2] Benzol, Phenyl hydride C6H6 78 0.880 80 0.5 5 1 5 12 Cancer × × Benzidine-based dyes; 4,4’-Bianiline; 4,4’-Biphenyldiamine; 1,1’-Biphe- Not Recom- Benzidine [92-87-5] C H N 184 1.250 402 0.001 Cancer (bladder) NR nyl-4,4’-diamine; 4,4’-Diaminobiphenyl; 12 12 2 mended p-Diaminodiphenyl

Benzyl acetate [140-11-4] C9H10O2 150 212 10 Irritation NR

Benzyl chloride [100-44-7] Chloromethylbenzene, alpha-Chlorotoluene C7H7Cl 127 1.100 179 1 5 1 5 1 0.044 Irritation; lung × × × ×

Biphenyl [92-52-4] Biphenyl, Phenyl benzene C12H10 154 1.040 255 0.2 0.22 0.2 Lung Please call to discuss Bismuth telluride, as Bi2Te3 Bismuth sesquitelluride, Bismuth telluride, Irritation Undoped [1304-82-1] Bi Te 801 7.700 573 15 5 10 5 × Bismuth tritelluride, Tellurobismuthite 2 3 Irritation; lung Se-doped Borates, tetra, sodium salts [1303-96-4] Anhydrous borax, Borax dehydrated, Anhydrous Disodium salt of boric acid, Disodium 1 B H Na O 201 Irritation × Decahydrate tetrabromate, Fused borax, Sodium borate 4 10 2 12 5 Pentahydrate (anhydrous), Sodium tetraborate 1 p:9 Bor–Car Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

) 3

Boron oxide [1303-86-2] Boric anhydride, Boric oxide, Boron trioxide B2O3 70 5 10 Irritation ×

Bromine [7726-95-6] Molecular bromine Br2 160 3.120 59 0 0.7 0.1 0.7 0.1 0.051 Irritation × × × Not Recom- Bromine pentafluoride [7789-30-2] Bromine fluoride BrF 175 2.480 41 0.1 0.1 Irritation NR 5 mended

Bromoform [75-25-2] Methyl tribromide, Tribromomethane CHBr3 253 2.890 150 0.5 5 0.5 5 1.3 Irritation; liver × × 2-Chloro-1,3-butadiene; Chlorobutadiene; Not Recom- 1,3-Butadiene [106-99-0] C H 54 0.650 -5 2 5 1.6 Cancer NR Chloroprene 4 6 mended Normal-Butane, Butyl hydride, Diethyl, Not Recom- n Butane [106-97-8] Methylethylmethane [Note: Also see C H 58 0.003 -12 800 800 1000 2700 Narcosis NR 4 10 mended specific listing for Isobutane.] 1-Butanol, n-Butanol, Butyl alcohol, Irritation; ototoxic; Butanol [71-36-3] C H O 74 0.810 118 25 100 0.83 × × 1-Hydroxybutane, n-Propyl carbinol 4 10 ocular Butyl Cellosolve®, Butyl oxitol, Dowanol® ® 2-Butoxyethanol (EGBE) [111-76-2] EB, EGBE, Ektasolve EB , Ethylene glycol C6H14O2 118 0.900 171 20 25 20 0.1 Irritation; CNS × × monobutyl ether, Jeffersol EB Butyl acetate, n-Butyl ester of acetic acid, n Butyl acetate [123-86-4] C H O 116 0.880 127 150 150 100 0.39 Irritation × × Butyl ethanoate 6 12 2 sec-Butyl ester of acetic acid, 1-Methylpro- sec Butyl acetate [105-46-4] C H O 116 0.860 200 200 100 Irritation × × pyl acetate 6 12 2 tert Butyl acetate [540-88-5] tert-Butyl ester of acetic acid C6H12O2 116 0.860 200 200 100 Irritation × × Irritation; n-Butyl acrylate, Butyl ester of acrylic acid, n Butyl acrylate [141-32-2] C H O 128 0.890 146 2 10 2 0.03 reproductive; × × Butyl-2-propenoate 7 12 2 sensitization n Butyl Chloride (109-69-3) C4H9Cl 92 79 Fire Risk NR sec Butyl Chloride (78-86-4) C4H9Cl 92 68 Fire Risk NR n-Butylamine [109-73-9] 1-Aminobutane, Butylamine C4H11N 73 0.740 78 5 15 5 15 5 1.8 Irritation × × Irritation; n Butyl glycidyl ether (BGE) [2426-08-6] BGE; 1,2-Epoxy-3-butoxypropane C H O 130 0.910 164 50 270 5.6 30 × × 7 14 2 sensitization Butyl ester of 2-hydroxypropanoic acid, Irritation; n Butyl lactate [138-22-7] C H O 146 0.980 188 5 5 7 × × Butyl ester of lactic acid, Butyl lactate 7 14 3 headache Butanethiol, 1-Butanethiol, n-Butanethiol, Not Recom- CNS; irritation; n Butyl mercaptan [109-79-5] C H S 90 0.830 10 0.5 0.5 NR 1-Mercaptobutane 4 10 mended reproductive para tert Butylphenol [89-72-5] C10H14O 150 0.890 226 5 5 Irritation × × 4-tert-Butyltoluene, 1-Methyl-4-tert-butyl- Butyl toluene [98-51-1] C H 148 0.860 193 10 60 10 60 5 Irritation; CNS; CVS × × benzene 11 16

Butyric Acid (107-92-6) C4H8O2 88 163.500 Irritation × × × × Cadmium Cadmium, elemental [7440-43-9], and 112 Cancer; kidney; metal: 0.005 × compounds, as Cd (Varies) metal fume fever Cadmium

Calcium carbonate [1317-65-3] Calcium salt of carbonic acid CCaO3 100 10 10 Irritation × Burned lime, Burnt lime, Lime, Pebble lime, Calcium oxide [1305-78-8] CaO 56 3.340 2850 2 5 Irritation × Quick lime, Unslaked lime Anhydrous calcium sulfate, Anhydrous

Calcium sulfate [7778-18-9] gypsum, Anhydrous sulfate of lime, Calcium CaO4S 136 2.960 1450 15 10 Irritation × salt of sulfuric acid 2,3-Dihydro-2,2-dimethyl-7-benzofuranyl Carbofuran [1563-66-2] C H NO 221 1.180 150 0.1 Cholinergic Please call to discuss methylcarbamate; Furacarb®; Furadan® 12 15 3 Acetylene black, Channel black, Furnace Fine Carbon black [1333-86-4] C 12 3.5 3.5 Lung × black, Lamp black, Thermal black powder p:10 Car–Chl Chemical Guide

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Chlorine [7782-50-5] Molecular chlorine Cl2 71 -35 1 0.5 0.5 0.31 Irritation × × Not Recom- mended, Irritation; Chlorine dioxide [10049-04-4] Chlorine oxide, Chlorine peroxide ClO 67 10 0.1 0.3 0.1 0.3 0.1 9.4 Explodes NR 2 bronchitis at Boiling Point Not Recom- Chlorine trifluoride [7790-91-2] Chlorine fluoride, Chlorotrifluoride ClF 92 12 0.1 0.1 0.1 Irritation; lung NR 3 mended Chloroacetaldehyde (40% aqueous

Chloroacetaldehyde [107-20-0] solution), 2-Chloroacetaldehyde, C2H3ClO 79 1 1 1 Irritation × × × × 2-Chloroethanal

Chloroacetone [78-95-5] C3H5ClO 93 119 1 Irritation Please call to discuss 2-Chloroacetophenone; Chloromethyl Not Recom- Irritation; Chloroacetophenone [532-27-4] phenyl ketone; Mace®; Phenacyl chloride; C H ClO 155 1.320 247 0.05 0.03 0.05 0.03 0.035 NR 8 7 mended sensitization Phenyl chloromethyl ketone; Tear gas Chloroacetic acid chloride, Chloroacetic Not Recom- Chloroacetyl chloride [79-04-9] C H Cl O 113 1.420 105 0.05 0.2 0.05 Irritation; lung NR chloride, Monochloroacetyl chloride 2 2 2 mended Benzene chloride, Chlorobenzol, MCB, Chlorobenzene [108-90-7] C H Cl 113 1.110 133 75 350 10 10 0.68 Liver × × × × Monochlorobenzene, Phenyl chloride 6 5 Chlorobenzylidene malononitrile Not Recom- C H ClN 189 Irritation NR [2698-41-1] 10 5 2 mended Bromochloromethane; CB; CBM; ® Chlorobromomethane [74-97-5] Fluorocarbon 1011; Halon 1011; Methyl CH2BrCl 129 1.930 68 200 1050 200 1050 200 400 CNS; liver × × × × chlorobromide Difluorochloromethane; Fluorocarbon-22; Not Recom- Chlorodifluoromethane Freon® 22; Genetron® 22; Monochlorodiflu- CHClF 86 1000 1000 3500 CVS NR 2 mended oromethane; Refrigerant 22 PCB C H CI Chlorodiphenyl (42% chlorine) Aroclor® 1242, PCB, Polychlorinated 12 8 2 Not Recom- Irritation; AND C H CI 267 1 ,001 NR [53469-21-9] biphenyl 12 7 3 mended chloracne; liver AND C12H6CI4 Chlorodiphenyl (54% chlorine) Aroclor® 1254, PCB, Polychlorinated Not Recom- Irritation; 328 0.5 0.001 NR [11097-69-1] biphenyl mended chloracne; liver CVS; liver; kidney; Chloroform [67-66-3] Methane trichloride, Trichloromethane CHCl 119 50 240 2 9.78 × × 3 CNS; reproductive Not Recom- Chloropentafluoroethane [76-15-3] C ClF 154 1000 CVS NR 2 5 mended Nitrochloroform, Nitrotrichloromethane, Not Recom- Chloropicrin [76-06-2] CCl NO 164 0.1 0.7 0.1 0.7 Irritation; lung NR Trichloronitromethane 3 2 mended p:11 Chr–Ddt Chemical Guide

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Clopidol [2971-90-6] 77288; Dichromium trioxide C7H7Cl2NO 192 320 15 10 Irritation × Pulmonary fibrosis; Anthracite coal dust, Bituminous coal dust, pneumoconiosis; Coal dust 1 2.4 × Lignite coal dust pulmonary function Cobalt, elemental [7440-48-4], 59 Cobalt metal dust, Cobalt metal fume Co 0.1 0.02 0.05 Asthma; lung; CVS × and inorganic compounds, as Co (Varies) Di-mu-Carbonylhexacarbonyl-dicobalt, Cobalt octacarbonyl, Cobalt tetracarbonyl Not Recom- Cobalt carbonyl [10210-68-1], as Co C Co O 342 1.870 5 -26 0.1 Pulmonary edema NR dimer, Dicobalt carbonyl, Dicobalt 8 2 8+4 mended Octacarbonyl, Octacarbonyldicobalt Cobalt hydrocarbonyl [16842-03-8], Hydrocobalt tetracarbonyl, Tetracarbonylhy- Not Recom- C HCOO 172 0.1 Pulmonary edema NR as Co dridocobalt, Tetracarbonylhydrocobalt 4 4 mended Irritation; GI; metal Copper [7440-50-8] Copper metal dusts, Copper metal fumes Cu 64 1 1 × fume fever Cotton dust, raw 0.2 Lung; byssinosis × Cresol, all isomers meta-Cresol, 3-Cresol, m-Cresylic acid, Dermatitis; [1319-77-3; 95-48-7; 108-39-4; 1-Hydroxy-3-methylbenzene, 3-Hydroxytolu- C H O 108 191 5 5 5 × × 7 8 irritation; CNS 106-44-5] ene, 3-Methyl phenol 2-Butenal, beta-Methyl acrolein, Propylene Crotonaldehyde C H O 70 0.870 102 2 6 2 6 0.12 Irritation × × aldehyde 4 6 Cumol, Isopropyl benzene, 2-Phenyl Cumene [98-82-8] C H 120 0.860 152 50 245 50 245 50 0.088 Irritation; CNS × × propane 9 12 Amidocyanogen, Carbimide, Carbodiimide, Not Recom- Cyanamide [420-04-2] CH N 42 1.260 260 2 Irritation NR Cyanogen nitride, Hydrogen cyanamide 2 2 mended Carbon nitride, Dicyan, Dicyanogen, Not Recom- Cyanogen [460-19-5] CN 52 0.002 -21 10 10 Irritation NR Ethanedinitrile, Oxalonitrile mended Chlorcyan, Chlorine cyanide, Chlorocya- Not Recom- Irritation; pulmo- Cyanogen chloride [506-77-4] CClN 61 0.003 13 0.3 0.6 NR nide, Chlorocyanogen mended nary function Benzene hexahydride, Hexahydrobenzene, Cyclohexane [110-82-7] C H 84 0.780 81 300 1050 300 1050 200 25 Irritation × × Hexamethylene, Hexanaphthene 6 12 Anol, Cyclohexyl alcohol, Hexahydrophenol, Cyclohexanol [108-93-0] C H O 100 0.960 162 50 200 50 200 50 0.15 Irritation; CNS × × Hexalin, Hydralin, Hydroxycyclohexane 6 12

Cyclohexanone [108-94-1] Anone, Cyclohexyl ketone, Pimelic ketone C6H10O 94 0.950 157 25 25 20 0.88 Irritation; liver × ×

Cyclohexene [110-83-8] Benzene tetrahydride, Tetrahydrobenzene C6H10 82 0.810 83 300 1015 300 1015 300 0.18 Irritation × × Aminocyclohexane, Aminohexahydroben-

Cyclohexylamine [108-91-8] zene, Hexahydroaniline, Hexahydroben- C6H13N 99 0.870 135 10 40 10 2.6 Irritation × × × zenamine

Cyclopentadiene [542-92-7] 1,3-Cyclopentadiene C5H6 66 0.800 42 75 200 75 200 75 1.9 Irritation × ×

Cyclopentane [287-92-3] Pentamethylene C5H10 70 0.750 49 600 600 Irritation; narcosis × × Dichlorophenoxyacetic acid; 2,4-Dichloro- 2,4-D [94-75-7] C H Cl O 221 1.570 10 10 Irritation Please call to discuss phenoxyacetic acid 8 6 2 3 p,p’-DDT; Dichlorod-iphenyltrichloroethane; DDT (Dichlorodiphenyltrichloroethane) 1,1,1-Trichloro-2,2-bis(p-chlorophenyl) C H N O 355 0.990 109 1 Seizures; liver Please call to discuss [50-29-3] 10 14 2 4 ethane p:12 Dec–Die Chemical Guide

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Substance ) Filtration 3 Chemical Chemical Formula Weight Mol. (MW) Specific Gravity (SG) Boiling Point (Bp ºC) Point Melting ºC)(Mp OSHA / TLV TWA (PPM) OSHA / TLV TWA (mg/ m GP Plus! ACI Plus! ACR ACM AMM SUL CYN FOR ETH MIL EDU HEPA / ULPA MAK TRK (PPM) Olf. [CAS No.] Synonyms VME NIOSH (PPM) VME NIOSH (mg/m Notes Critical Effects Not Recom- CNS; pulmonary Decaborane [17702-41-9] Decaboron tetradecahydride BH 122 0.940 213 0.05 0.05 0.05 0.25 NR 3 mended function O-O-Diethyl-O(and S)-2-(ethylthio)ethyl Not Recom- Demeton [8065-48-3] C H O P S 258 1.120 134 0.01 0.01 0.01 Cholinergic × × phosphorothioate mixture; Systox® 16 38 6 2 4 mended Diacetone, 4-Hydroxy-4-methyl-2-penta- Diacetone alcohol [123-42-2] C H O 116 0.940 168 50 50 50 0.28 Irritation × × none, 2-Methyl-2-pentanol-4-one 6 12 2 Basudin®; Diazide®; O,O-Diethyl-O-2-isopro- Not Recom- Diazinon [333-41-5] pyl-4-methyl-6-pyrimidinyl-phosphorothio- C H N O PS 304 0.1 Cholinergic NR 12 21 2 3 mended ate; Spectracide® Not Recom- Irritation; cancer Diazomethane [334-88-3] Azimethylene, Azomethylene, Diazirine CH N 42 0.002 -23 0.2 0.4 0.2 0.4 NR 2 2 mended (lung) Boroethane, Boron hydride, Diboron Not Recom- CNS; pulmonary Diborane [19287-45-7] B H 28 0.001 -92 0.1 0.1 0.1 0.1 2.5 NR hexahydride 2 4 mended function 2,6-Di-tert-butyl-p-cresol [Butylated C H O 220 1.050 265 10 Irritation × hydroxytoluene (BHT)] [128-37-0] 15 24 o-DCB; 1,2-Dichlorobenzene; ortho-Dichlo- Dichlorobenzene [95-50-1] C H Cl 147 1.300 180 50 300 50 300 50 0.3 Irritation; liver × × robenzene; o-Dichlorobenzol 6 4 2 Irritation; 3,3N-Dichlorobenzidine [91-94-1] 253 178 0.003 × dermatitis Difluorodichloromethane; Fluorocarbon ® ® ® Dichlorodifluoromethane [75-71-8] 12; Freon 12; Genetron 12; Halon 122; CCl2F2 120 -29 1000 4950 1000 4950 1000 CVS × × Propellant 12; Refrigerant 12 1,3-Dichloro-5,5-dimethyl hydantoin Not Recom- C H Cl N O 197 0.2 Irritation NR [118-52-5] 5 6 2 2 2 mended Asymmetrical dichloroethane; Ethylidene Liver; kidney; 1,1-Dichloroethane [75-34-3] C H Cl 99 1.180 57 100 400 100 400 100 190 × × chloride; 1,1-Ethylidene dichloride 2 4 2 irritation 1,2-Dichloroethylene, sym [540-59-0], C H Cl 97 1.270 59 200 200 17 Liver × × cis [156-59-2], and trans [156-60-5] 2 2 2 bis(2-Chloroethyl)ether; 2,2’-Dichlorodi- Dichloroethyl ether [111-44-4] C H Cl O 143 1.220 179 15 90 5 10 0.049 Irritation; lung × × ethyl ether; 2,2’-Dichloroethyl ether 4 8 2 Dichlorofluoromethane; Fluorodichloro- ® ® ® Dichlorofluoromethane [75-43-4] methane; Freon 21; Genetron 21; Halon CHCl2F 103 0.004 9 1000 4200 10 40 10 Liver Please call to discuss 112; Refrigerant

1,1-Dichloro-1-nitroethane [594-72-9] Dichloronitroethane C2H3Cl2NO2 144 1.430 124 10 2 10 Irritation Please call to discuss 3-Chloroallyl chloride; DCP; 1,3-Dichloro-1- 1,3-Dichloropropene [542-75-6] C H Cl 111 1.210 103 1 0.11 Irritation Please call to discuss propene; 1,3-Dichloropropylene; Telone® 3 4 2 Dalapon; 2,2-Dichloropropanoic acid; 2,2-Dichloropropionic acid [75-99-0] C H Cl O 143 1.400 98 1 1 1 Irritation × × alpha,alpha-Dichloropropionic acid 3 4 2 2 1,2-Dichlorotetrafluoroethane; Freon® 114; CVS; narcosis; Dichlorotetrafluoroethane [76-14-2] C Cl F 171 0.007 4 1000 7000 1000 7000 1000 × × Genetron® 114; Halon ® 242; Refrigerant 114 2 2 4 asphyxiation Not Recom- Dichlorvos [62-73-7] DDVP; 2,2-Dichlorovinyl dimethyl phosphate C H Cl O P 221 1.420 77 1 0.1 1 0.1 Cholinergic NR NR 4 7 2 4 mended Bidrin®; Carbicron®; 2-Dimethyl-cis-2-di- Not Recom- Dicrotophos [141-66-2] C H NO P 237 1.220 400 0.25 Cholinergic NR NR methylcarbamoyl-1-methylvinylphosphate 8 16 5 mended Bicyclopentadiene; DCPD; 1,3-Dicyclo-

Dicyclopentadiene [77-73-6] pentadiene dimer; 3a,4,7,7a-Tetrahy- C10H12 132 0.980 167 5 5 0.5 Irritation × × dro-4,7-methanoindene HEOD; 1,2,3,4,10,10-Hexachloro-6,7-ep-

Dieldrin [60-57-1] oxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-en- C12H8Cl6O 381 1.750 0.25 0.25 Liver; CNS Please call to discuss do,exo-5,8-dimethanonaphthalene DEA; Di(2-hydroxyethyl)amine; 2,2’-Dihy- Liver; kidney; Diethanolamine [111-42-2] droxydiethyamine; Diolamine; bis(2-Hy- C H NO 105 1.100 2 3 × × 4 11 2 blood droxyethyl)amine; 2,2’-Iminodiethanol Diethamine; N,N-Diethylamine; N-Ethy- Diethylamine [109-89-7] C H N 73 0.710 56 25 10 5 0.13 Irritation × × lethanamine 4 11 p:13 Die–Eme Chemical Guide

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Diethyl ketone [96-22-0] anhydride C5H10O 86 0.810 102 200 200 705 2 Irritation; narcosis × × DEP, Diethyl ester of phthalic acid, Ethyl Not Recom- Diethyl phthalate [84-66-2] C H O 222 1.120 302 5 5 Irritation NR phthalate 12 14 4 mended Irritation; liver; Difluorodibromomethane [75-61-6] CBr F 210 2.290 23 100 100 100 Please call to discuss 2 2 CNS Diallyl ether dioxide; DGE; di (2,3-epoxy- Not Recom- Irritation; repro- Diglycidyl ether (DGE) [2238-07-5] propyl) ether; 2-Epoxypropyl ether; C H O 130 1.120 260 0.4 0.1 0.1 NR 6 10 3 mended ductive; blood bis(2,3)-Ethoxypropyl) ether DIBK, Sym-Diispropyl acetone; 2-6-Dieth- Diisobutyl ketone [108-83-8] C H O 142 0.810 166 50 290 25 150 50 0.11 Irritation × × yl-4-heptanone; Isovalerone; Valerone 9 18

Diisopropylamine [108-18-9] DIPA, N-(1-Methylethyl)-2-propanamine C6H15N 101 0.720 83 5 20 5 20 1.8 Vision; irritation × ×

Dimethylacetamide [127-19-5] C4H9NO 87 0.940 165 10 10 10 47 Reproductive; liver Please call to discuss Dimethylamine (anhydrous), N-Methylmeth- Not Recom- Dimethylamine [124-40-3] C H N 45 0.002 7 10 18 10 18 2 0.34 Irritation NR anamine 2 7 mended Dimethylaniline (N,N-Dimethylaniline) N,N-Dimethylbenzeneamine; N,N-Dimeth- Anoxia; neurotoxic- C H N 121 0.960 193 5 25 5 25 5 0.13 × × × [121-69-7] ylphenylamine 48 66 6 ity Dimethyl formamide; N,N-Dimethylforma- Dimethylformamide [68-12-2] C H NO 73 0.950 153 10 30 10 30 10 2.2 Liver × × mide; DMF 3 7 Dimazine, DMH, UDMH, Unsymmetrical Not Recom- Irritation; 1,1-Dimethylhydrazine [57-14-7] C H N 60 0.790 63 0.5 1 0.06 0.15 1.7 NR dimethylhydrazine 2 8 2 mended neoplasia Dimethyl ester of sulfuric acid, Dimethylsul- Not Recom- Dimethyl sulfate [77-78-1] C H O S 126 1.330 188 1 0.1 0.04 Irritation NR fate, Methyl sulfate 2 6 4 mended 3,5-Dinitro-o-toluamide; 2-Methyl-3,5-dini- Dinitolmide [148-01-6] C H N O 225 177 50 50 5 Irritation; liver × × trobenzamide; Zoalene 8 7 3 5 Dinitrobenzene, all isomers [528-29-0; Not Recom- C H N O 168 299 0.15 1 Anoxia NR 99-65-0; 100-25-4] 6 4 2 4 mended Metabolic Dinitrol-o-cresol [534-52-1] 198 1.100 312 0.2 Please call to discuss disorders Diethylene dioxide; Diethylene ether; Irritation; liver; 4-Dioxane [123-91-1] C H O 88 1.030 101 100 360 1 3.6 20 24 × × Dioxan; p-Dioxane; 1,4-Dioxane 4 8 2 kidney Delnav®; p-Dioxane-2,3-diyl ethyl phosphorodithioate; Dioxane phosphate; Not Recom- Dioxathion [78-34-2] C H O P S 457 1.260 -20 0.2 0.2 Cholinergic NR 2,3-p-Dioxanethiol-S,S-bis(O,O-diethyl 12 26 6 2 4 mended phosphoro-dithioate); Navadel® Anilinobenzene, DPA, Phenylaniline, Liver; kidney; Diphenylamine [122-39-4] C H N 169 1.160 302 10 10 0.001 Please call to discuss N-Phenylaniline, N-Phenylbenzenamine 12 11 blood Diquat dibromide; 1,1’-Ethylene-2,2’-bipyr- Not Recom- Irritation; ocularIr- Diquat [2764-72-9] C H Br N 344 0.5 0.5 NR idyllium dibromide 12 12 2 2 mended ritation; ocular Antabuse®; bis(Diethylthiocarbamoyl) Not Recom- Disulfiram [97-77-8] disulfide; Ro-Sulfiram®; TETD; Tetraethylthi- C H N S 297 1.300 72 2 2 GI; CVS NR 10 20 2 4 mended uram disulfide O,O-Diethyl S-2-(ethylthio)-ethyl phospho- Not Recom- Disulfoton [298-04-4] C H O PS 274 1.140 62 0.1 0.1 Cholinergic NR rodithioate; Di-Syston®; Thiodemeton 8 19 2 3 mended 3-(3,4-Dichlorophenyl)-1,1-dimethylurea; Not Recom- Diuron [330-54-1] C H Cl N O 233 154 10 10 Irritation; blood NR Direx®; Karmex® 9 10 2 2 mended

Divinyl benzene [1321-74-0] Diethyl benzene, DVB, Vinylstyrene C10H10 130 0.930 195 10 50 10 50 Irritation × × Aluminum oxide, Aluminum trioxide, Emery [1302-74-5] Corundum, Impure corundum, Natural 102 4.000 2980 15 5 0.001 Irritation × aluminum oxide p:14 End–Eth Chemical Guide

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Ethanol [64-17-5] C2H6O 46 0.790 78 1000 1000 500 84 Irritation × × 2-Aminoethanol, beta-Aminoethyl alcohol,

Ethanolamine [141-43-5] Ethylolamine, 2-Hydroxyethylamine, C2H7NO 61 1.020 171 3 6 3 8 2 2.6 Irritation × × Monoethanolamine O,O,O’,O’-Tetraethyl S,S’-methylene Not Recom- Ethion [563-12-2] C H O P S 384 1.220 -13 0.4 0.4 Cholinergic NR di(phosphorodithioate) 9 22 4 2 4 mended Acetic ester, Acetic ether, Ethyl ester of Ethyl acetate [141-78-6] C H O 88 0.900 77 400 1400 400 1400 400 3.9 Irritation × × acetic acid, Ethyl ethanoate 4 8 2 Alcohol, Cologne spirit, Ethanol, EtOH, Ethyl alcohol, see Ethanol C H O 1000 1900 1000 1900 × × Grain alcohol 2 6 Aminoethane, Ethylamine (anhydrous), Not Recom- Ethylamine [75-04-7] C H N 45 0.002 17 10 18 10 18 5 Irritation NR Monoethylamine 2 7 mended

Ethyl amyl ketone [541-85-5] Ethyl amyl ketone, 3-Methyl-5-heptanone C8H16O 128 0.820 157 25 130 25 130 6 Irritation × ×

Ethyl benzene [100-41-4] Ethylbenzol, Phenylethane C8H10 106 0.870 136 100 435 100 435 100 2.3 Irritation; CNS × ×

Ethyl butyl ketone [106-35-4] Butyl ethyl ketone, 3-Heptanone C7H14O 114 0.820 148 50 230 50 230 Irritation; narcosis × × Chloroethane, Hydrochloric ether, Not Recom- Ethyl chloride [75-00-3] C H Cl 65 0.002 12 1000 2600 9 4.2 Liver; CNS NR Monochloroethane, Muriatic ether 2 5 mended Mecrylate, Methyl cyanoacrylate, Methyl Polymerizes

Ethyl cyanoacrylate [7085-85-0] alpha-cyanoacrylate, Methyl ester of C6H7NO2 125 0.2 2 8 when Irritation; necrosis × × 2-cyanoacrylic acid heated Irritation; liver; 2-Chloroethanol, 2-Chloroethyl alcohol, Ethylene chlorohydrin [107-07-3] C H ClO 81 1.200 129 5 16 1 3 1 kidney; GI; CVS; × × Ethylene chlorhydrin 2 5 CNS 1,2-Diaminoethane; 1,2-Ethanediamine; Irritation; asthma; Ethylenediamine [107-15-3] C H N 60 0.910 117 10 25 10 25 10 2.5 × × Ethylenediamine (anhydrous) 2 8 2 sensitization 1,2-Dibromoethane; Ethylene bromide; Irritation; liver; Ethylene dibromide [106-93-4] C H Br 188 2.170 131 20 0.045 0.1 × × Glycol dibromide 2 4 2 kidney 1,2-Dichloroethane; Ethylene chloride; Ethylene dichloride [107-06-2] C H Cl 99 50 1 4 Liver; narcosis × × Glycol dichloride 2 4 2 1,2-Dihydroxyethane; 1,2-Ethanediol; Ethylene glycol [107-21-1], aerosol C H O 62 1.110 198 39.4 50 10 Irritation × × Glycol; Glycol alcohol; Monoethylene glycol 2 6 2 Not Recom- EGDN; 1,2-Ethanediol dinitrate; Ethylene mended, Ethylene glycol dinitrate (EGDN) dinitrate; Ethylene nitrate; Glycol dinitrate; C H N O 152 1.490 114 0.1 1 0.2 0.05 explodes CVS NR [628-96-6] 2 4 2 6 Nitroglycol at Boiling Point Lung; liver; kidney; Dimethylene oxide; 1,2-Epoxy ethane; Not Recom- Ethylene oxide [75-21-8] C H O 44 0.002 11 1 0.1 1 430 blood; CNS; NR Oxirane 2 4 mended cancer Aminoethylene, Azirane, Aziridine, Dimethy- Not Recom- Irritation; Ethylenimine [151-56-4] leneimine, Dimethylenimine, Ethylenimine, C H N 43 0.830 55 0.5 0.5 1.5 NR 2 5 mended bronchitis Ethylimine Diethyl ether, Diethyl oxide, Ethyl oxide, Ethyl ether [60-29-7] C H O 74 0.710 35 400 1200 400 500 400 8.9 Irritation; narcosis × × Ether, Solvent ether 4 10 p:15 Eth–Haf Chemical Guide

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Ethyl formate [109-94-4] Ethyl ester of formic acid, Ethyl methanoate C3H6O2 74 0.920 49 100 300 300 100 31 Irritation × × ENB, 5-Ethylidenebicyclo(2.2.1)hept-2-ene, Not Recom- Ethylidene norbornene [16219-75-3] C H 120 5 25 5 25 Irritation NR 5-Ethylidene-2-norbornene 9 12 mended Ethanethiol, Ethyl sulfhydrate, Mercap- Ethyl mercaptan [75-08-1] C H S 62 0.840 36 10 25 0.5 1.3 0.5 Irritation × toethane 2 6 Ethyl 3-methyl-4-(methylthio)phe- Not Recom- Fenamiphos [22224-92-6] nyl-(1-methylethyl)phosphoramidate; C H NO PS 303 1.140 49 0.1 0.1 Cholinergic NR 13 22 3 mended Nemacur®; Phenamiphos Dasanit®; O,O-Diethyl O-(p-methylsulfinyl) Not Recom- Fensulfothion [115-90-2] C H O PS 308 1.200 141 0.1 0.1 Cholinergic NR phenyl)phosphorothioate; Terracur P® 11 17 4 2 mended Baytex; Entex; O,O-Dimethyl O-3-meth- Not Recom- Fenthion [55-38-9] C H O PS 278 1.250 87 0.2 0.2 Cholinergic NR yl-4-methylthiophenyl phosphorothioate 10 15 3 2 mended tris(Dimethyldithiocarbamato)iron, Ferric Not Recom- Ferbam [14484-64-1] C H FeN S 417 180 15 10 Irritation NR dimethyl dithiocarbamate 9 18 3 6 mended Ferrovanadium dust [12604-58-9] Ferrovanadium Fe.V 107 1 1 Irritation × Irritation; bone; Fluorides, as F varies 2.5 × × × fluorosis Not Recom- Fluorine [7782-41-4] Fluorine-19 F 38 0.002 -187 0.1 0.2 0.1 0.2 0.1 0.14 Irritation NR 2 mended Freon® 11; Monofluorotrichloromethane; Fluorotrichloromethane, see Trichloroflu- Refrigerant 11; Trichlorofluoromethane; CCl F 137 0.006 24 1000 5600 1000 5600 1000 5 Please call to discuss oromethane 3 Trichloromonofluoromethane Dyfonate®; Dyphonate; O-Ethyl-S-phenyl Not Recom- Fonofos [944-22-9] C H OPS 246 1.150 100 0.1 Cholinergic NR ethylphosphorothioate; Fonophos 10 15 2 mended 1.3-Dioxacyclopentane; 1,3-dioxolane stab.; Irritation; cancer Formaldehyde [50-00-0] Ethylene glycol methylene ether~Formalde- CH O 30 1.080 0.4 0.5 0.5 0.83 × 2 (nasal) hyde ethylene acetal; 1,3-Dioxalane Not Recom- Formamide [75-12-7] Carbamaldehyde, Methanamide CH NO 45 1.130 200 10 10 15 Irritation; liver NR 3 mended Formic acid (85-95% in aqueous solution); Formic acid [64-18-6] CH O 46 1.220 101 5 9 5 9 5 49 Irritation × × × × Hydrogen carboxylic acid; Methanoic acid 2 2 Fural, 2-Furancarboxaldehyde, Furfuralde- Furfural [98-01-1] C H O 96 5 20 2 Irritation × × hyde, 2-Furfuraldehyde 5 4 2

Furfuryl alcohol [98-00-0] 2-Furylmethanol, 2-Hydroxymethylfuran C5H6O2 98 50 200 10 40 Irritation × × Motor fuel, Motor spirits, Natural gasoline, Gasoline [8006-61-9] 34 300 flamable Irritation; CNS × × Petrol Glutaraldehyde [111-30-8], activated and Irritation; Glutaric dialdehyde; 1,5-Pentanedial C H O 100 1.100 187 0.2 0.8 0.1 × inactivated 5 8 2 sensitization Glycerin (anhydrous); Glycerol; Glycyl alco- Not Recom- Glycerin mist [56-81-5] C H O 92 1.260 290 15 Irritation NR hol; 1,2,3-Propanetriol; Trihydroxypropane 3 8 3 mended 2,3-Epoxy-1-propanol; Epoxypropyl alcohol; Glycide; Hydroxymethyl ethylene oxide; Irritation; Glycidol [556-52-5] C H O 74 1.120 50 150 25 75 50 × × 2-Hydroxymethyl oxiran; 3-Hydroxypropyl- 3 6 2 neoplasia ene oxide Irritation; bron- Grain dust (oat, wheat, barley) 4 chitis; pulmonary × function Graphite -all forms except graphite fibers- Black lead, Mineral carbon, Plumbago, C X 2 2.5 Pneumoconiosis × [7782-42-5] Silver graphite, Stove black 24 12 Not Rec- ommended

Hafnium [7440-58-6] and compounds Celtium, Elemental hafnium, Hafnium metal C10H15Cl3Hf 178 0.5 0.5 can Liver; irritation NR explode in powder p:16 Hal–Hyd Chemical Guide

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Hexamethyl phosphoramide [680-31-9] Hexamethyl-phosphorotriamide, HMPA, C6H18N3OP 179 Lung Please call to discuss Tris(dimethylamino)phosphine oxide Neuropathy; CNS; n Hexane [110-54-3] Hexane, Hexyl hydride, normal-Hexane C H 86 0.660 69 50 180 500 1800 50 130 × × 6 14 irritation Diethylmethylmethane; Diisopropyl; 2,2-Dimethylbutane; 2,3-Dimethylbutane; Hexane, Other isomers C H 86 500 100 350 200 CNS; irritation × × Isohexane; 2-Methylpentane; 3-Methyl- 6 14 pentane

1,6-Hexanediamine [124-90-4] C6H16N2 116 24 0.5 Irritation Please call to discuss

1-Hexene [592-41-6] C6H12 84 64 30 CNS; irritation × × 1,3-Dimethylbutyl acetate; Methylisoamyl sec-Hexyl acetate [108-84-9] C H O 144 0.860 146 50 300 50 300 50 Irritation × × acetate 8 16 2 2,4-Dihydroxy-2-methylpentane; 2-Meth- Not Recom- Hexylene glycol [107-41-5] yl-2,4-pentanediol; 4-Methyl-2,4-pen- C H O 118 0.920 197 25 125 50 Irritation NR 6 14 2 mended tanediol; 2-Methylpentane-2,4-diol Diamine, Hydrazine (anhydrous), Hydrazine Not Recom- Hydrazine [302-01-2] C H ClN 32 1.010 114 1 1.3 0.1 Irritation; liver NR base 7 11 2 mended Heat to 80 Hydrocloric Acid (7647-01-0) see Anhydrous hydrogen chloride; Aqueous ClH 37 5 7 5 7 5 0.77 degree C Irritation × × × hydrogen Cloride hydrogen chloride max Heat to 60 Hydrofluoric Acid (7664-39-3) see Anhydrous hydrogen fluoride; Aqueous FH 20 3 6 3 3 0.042 degree C Corrosive to skin × × × hydrogen fluoride hydrogen fluoride max Not Recom- Hydrogen [1333-74-0] Hydrogen, Normal Hydrogen H 1 Asphyxiation NR 2 mended Hydrogenated diphenylbenzenes, Hydro- Hydrogenated terphenyls - nonirradiated genated phenylbiphenyls, Hydrogenated C H 241 0.5 ppm 0.5 5 Irritation; liver - [61788-332-7] 18 22 triphenyls Anhydrous hydrogen bromide; Aqueous Hydrogen bromide [10035-10-6] BrH 81 0.003 -67 3 10 3 10 2 2 Irritation × × × hydrogen bromide Anhydrous hydrogen chloride; Aqueous Hydrogen chloride [7647-01-0] ClH 36 0.002 -85 5 7 5 7 5 0.77 Irritation; corrosion × × × hydrogen chloride Hydrogen cyanide and Cyanide salts, CNS; irritation; as CN Formonitrile, Hydrocyanic acid, Prussic acid CHN 27 0.690 26 10 11 4.7 5 10 0.58 anoxia; lung; × × Hydrogen cyanide [74-90-8] thyroid Irritation; burns; Anhydrous hydrogen fluoride; Aqueous Hydrogen fluoride [7664-39-3], as F FH 20 20 3 3 2.5 3 0.042 bone; teeth; × × × hydrogen fluoride fluorosis p:17 Hyd–Ket Chemical Guide

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Hydrogen peroxide [7722-84-1] dioxide, Hydrogen peroxide (aqueous), H2O2 34 1.390 152 1 1.4 1 1.4 1 pulmonary edema; Please call to discuss Hydroperoxide, Peroxide CNS Not Recom- Hydrogen selenide [7783-07-5], as Se Selenium dihydride, Selenium hydride H Se 81 0.003 -41 0.05 0.2 0.05 0.2 0.05 0.3 Irritation; GI NR 2 mended Hydrosulfuric acid, Sewer gas, Sulfuretted Sudden death; Hydrogen sulfide [7783-06-4] H S 34 0.001 -60 20 50 10 15 10 × × × × hydrogen 2 irritation; CNS Hydroquinone monomethyl ether, p-Hy- CNS; dermatitis; Hydroquinone [123-31-9] droxyanisole, Mequinol, p-Methoxyphenol, C H O 110 1.330 286 2 5 × 6 6 2 ocular Monomethyl ether hydroquinone HPA, beta-Hydroxypropyl acrylate, Not Recom- Irritation; 2-Hydroxypropyl acrylate [999-61-1] C H O 130 0.5 3 NR Propylene glycol monoacrylate 6 10 3 mended sensitization Bicyclopentadiene; DCPD; 1,3-Dicyclo- Irritation; liver; Indene [95-13-6] pentadiene dimer; 3a,4,7,7a-Tetrahy- C H 116 0.997 182 10 5 30 0.015 Please call to discuss 9 8 kidney dro-4,7-methanoindene Pulmonary edema; Indium [7440-74-6] and compounds, as In Indium metal In 49 7.310 0.1 0.1 × bone; GI Radionucle- Iodine [7553-56-2] Iodine crystals, Molecular iodine I 254 4.930 185 0.1 0.1 0.1 Irritation × 2 ides Radioactive CNS; liver; kidney; Iodoform [75-47-8] Triiodomethane CHI 394 0.6 0.6 10 × 3 Iodines CVS Not Recom- Pulmonary edema; Iron pentacarbonyl [13463-40-6], as Fe Iron carbonyl, Pentacarbonyl iron Fe(CO) 196 0.1 0.23 NR 5 mended CNS

Iron salts, soluble, as Fe FeSO4: Ferrous sulfate, Iron(II) sulfate FeMoO4 (Varies) 1 Irritation × Isobutyl ester of acetic acid, 2-Methylpropyl

Isobutyl acetate [110-19-0] acetate, 2-Methylpropyl ester of acetic acid, C6H12O2 116 0.870 117 150 700 150 700 100 0.64 Irritation × × beta-Methylpropyl ethanoate IBA, Isobutanol, Isopropylcarbinol, Isobutyl alcohol [78-83-1] C H O 74 0.800 108 50 150 100 300 100 1.6 Irritation; ocular × × 2-Methyl-1-propanol 4 10

Isooctyl alcohol [26952-21-6] Isooctanol, Oxooctyl alcohol C8H18O 130 0.830 182 50 270 50 Irritation Please call to discuss Isoacetophorone; 3,5,5-Trimethyl-2-cyclo-

Isophorone [78-59-1] hexenone; 3,5,5-Trimethyl-2-cyclo-hexen- C9H14O 138 0.920 215 25 140 4 23 2 0.2 Irritation; narcosis × × 1-one 3-Isocyanatomethyl-3,5,5-trimethylcy- Dermatitis; Not Recom- Isophorone diisocyanate [4098-71-9] clohexyl-isocyanate; Isophorone diamine C H N O 222 1.060 158 0.005 0.005 0.045 0.01 asthma; NR 11 14 2 3 mended diisocyanate sensitization Ethylene glycol isopropyl ether;

2-Isopropoxyethanol [109-59-1] beta-Hydroxyethyl isopropyl ether; Isopropyl C5H12O2 104 0.900 139 25 25 5 Blood Please call to discuss Cellosolve®; Isopropyl glycol Isopropyl ester of acetic acid, 1-Methylethyl Isopropyl acetate [108-21-4] C H O 102 0.870 88 250 250 200 2.7 Irritation × × ester of acetic acid, 2-Propyl acetate 5 10 2 Dimethyl carbinol, IPA, Isopropanol,

Isopropyl alcohol [67-63-0] 2-Propanol, sec-Propyl alcohol, Rubbing C3H8O 60 0.790 83 400 980 400 980 200 22 Irritation × × alcohol

Isopropylamine [75-31-0] DIPA, N-(1-Methylethyl)-2-propanamine C3H9N 59 0.690 34 5 20 5 20 5 1.2 Irritation × × N-IPA, Isopropylaniline, N-(1-Methyleth- Isopropylaniline [768-52-5] C H N 135 0.930 206 2 2 10 Blood Please call to discuss yl)-benzenamine, N-Phenylisopropylamine 9 13 Ethylene glycol isopropyl ether;

Isopropyl ether [108-20-3] beta-Hydroxyethyl isopropyl ether; Isopropyl C6H14O 102 0.730 69 250 250 500 0.017 Irritation × × Cellosolve®; Isopropyl glycol 1,2-Epoxy-3-isopropoxypropane; IGE; Irritation; Isopropyl glycidyl ether (IGE) [4016-14-2] C H O 116 0.920 127 50 240 50 240 × × Isopropoxymethyl oxirane 6 12 2 dermatitis Not Recom- Lung irritation; Ketene [463-51-4] Carbomethene, Ethenone, Keto-ethylene C H O 42 0.002 -56 0.5 0.9 0.5 0.9 0.5 NR 2 2 mended pulmonary edema p:18 Lac–Met Chemical Guide

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Lindane [58-89-9] gamma isomer of 1,2,3,4,5,6-Hexa- C6H6Cl6 291 1.850 0.5 0.5 CNS; liver Please call to discuss chloro-cyclohexane Lithium hydride [7580-67-8] Lithium monohydride HLi 8 0.780 680 0.025 0.025 Irritation × Bottled gas, Compressed petroleum gas, L.P.G. (Liquefied petroleum gas) Liquefied hydrocarbon gas, Liquefied C H 42–58 1000 1800 1000 1800 Asphyxiation Please call to discuss [68476-85-7] 3 8 petroleum gas, LPG Carbonate magnesium, Hydromagnesite, Irritation; Magnesite [546-93-0] Magnesium carbonate, Magnesium(II) CMgO 84 2.960 10 5 15 5 × 3 pneumoconiosis carbonate Irritation; metal Magnesium oxide fume [1309-48-4] Magnesia fume CMgO 40 3.580 15 10 × 3 fume fever cis-Butenedioic anhydride; 2,5-Furane-

Maleic anhydride [108-31-6] dione; Maleic acid anhydride; Toxilic C4H2O3 98 1.480 188 1 0.25 1 0.25 0.1 0.32 Irritation; asthma Please call to discuss anhydride Manganese, elemental [7439-96-5], and Manganese metal: Colloidal manganese, 55 CNS (manganism); Mn 7.200 5 1 3 × inorganic compounds, as Mn Manganese-55 (Varies) lung; reproductive Cyclopentadienylmanganese tricarbonyl, Manganese cyclopentadienyl tricar- Not Recom- CNS; pulmonary Cyclopentadienyl tricarbonyl manganese, C H MnO * 204 5 0.1 NR bonyl[12079-65-1], as Mn 8 5 3 5 mended edema MCT CNS Mercury [7439-97-6], as Hg 201 0.01 CNS; neuropathy; Alkyl compounds (Varies) Mercury metal: Colloidal mercury, Metallic 0.1 vision; kidney Aryl compounds C F HgO (Varies) × mercury, Quicksilver 4 6 4 0.025 CNS; kidney; Inorganic forms, including metallic (Varies) neuropathy; vision; mercury reproductive; GI Isobutenyl methyl ketone, Isopropylide- Irritation; narcosis; Mesityl oxide [141-79-7] neacetone, Methyl isobutenyl ketone, C H O 98 0.860 130 25 100 10 40 25 0.45 × × 6 10 liver; kidney 4-Methyl-3-penten-2-one Methacrylic acid, isobutyl ester;Isobutyl «alpha»-methylacrylate;Isobutyl methacrylate;Isobutyl 2-methyl-2-prope-

Methacrylic acid [79-41-4] noate;2-Methylpropyl methacrylate;Isobutyl C6H10O 86 20 Irritation × × «alpha»-methacrylate;Isobutylester kyseliny methakrylove;Isobutyl methacrylate, inhibited;UN 2283;Isobutyl 2-methylacrylate Not Recom- Methane [74-82-8] CH 16 -162.000 Asphyxiation NR 4 mended Not Recom- Neuropathy; Methanol [67-56-1] CH O 32 200 NR 4 mended vision; CNS Lannate®; Methyl N-((methylamino) Not Recom- Methomyl [16752-77-5] carbonyl)oxy)ethanimidothioate; S-Meth- C H N O S 162 1.290 78 2.5 Cholinergic NR 5 10 2 2 mended yl-N(methylcarbamoyloxy)thioacetimidate Hydroquinone monomethyl ether, p-Hy- Not Recom- Ocular; depigmen- 4-Methoxyphenol [150-76-5] droxyanisole, Mequinol, p-Methoxyphenol, C H O 124 1.550 246 5 NR 7 8 2 mended tation Monomethyl ether hydroquinone p:19 Met–Met Chemical Guide

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Methyl acetylene [74-99-7] Allylene, Propine, Propyne, 1-Propyne C3H4 40 0.002 -23 1000 1650 1000 1650 1000 Anesthesia × × MAPP gas, Methyl acetylene-allene mixture, Methyl acetylene-propadiene mixture Methyl acetylene-propadiene mixture (stabilized), Propadiene-methyl acetylene, C H 40 0.002 -35 1000 1800 1000 1800 1000 Anesthesia × × (MAPP) 6 8 Propyne-allene mixture, Propyne-propadiene mixture Methoxycarbonylethylene, Methyl ester of Methyl acrylate [96-33-3] C H 86 0.960 66 10 35 10 35 2 Irritation × × acrylic acid, Methyl propenoate 6 8 2-Cyanopropene-1, 2-Cyano-1-propene, Isoprene cyanide, Isopropenylnitrile, Methylacrylonitrile [126-98-7] C H N 67 0.800 90 1 3 1 3 7 Irritation; CNS Please call to discuss Methacrylonitrile, alpha-Methylacrylonitrile, 4 5 2-Methylpropenenitrile Dimethylamine (anhydrous), N-Methylmeth- Not Recom- Methylamine [74-89-5] CH N 31 0.001 6 10 18 10 18 10 3.2 Irritation NR anamine 5 mended MA, (Methylamino)benzene, Methylphenyl- n Methyl aniline [100-61-8] CH N 107 0.990 194 2 9 0.5 2 0.5 1.7 Anoxia; blood Please call to discuss amine, N-Phenylmethylamine 5 Pulmonary edema; Methyl bromide [74-83-9] Bromomethane, Monobromomethane CH Br 95 0.004 4 20 80 5 Please call to discuss 3 neurotoxicity; CNS Methyl tert-butyl ether (MTBE) [1634- Propane, 2-methoxy-2-methylmeth- Irritation; kidney; C H O 88 55 40 Please call to discuss 04-4] yl-1,1-dimethylethylether 5 12 reproductive Butyl methyl ketone, MBK, Methyl butyl Methyl n-butyl ketone [591-78-6] C H O 100 0.810 127 100 410 1 4 5 0.76 Neuropathy × × ketone, Methyl n-butyl ketone 6 14 Not Recom- Kidney; CNS; Methyl chloride [74-87-3] Chloromethane, Monochloromethane CH Cl 50 -24 100 200 50 50 10 NR 3 mended reproductive Anesthesia; CNS; Chlorothene; 1,1,1-Trichloroethane; Methyl chloroform [71-55-6] C H Cl 133 1.340 74 350 1900 350 1900 200 120 liver; kidney; CVS; × × 1,1,1-Trichloroethane (stabilized) 2 3 3 dermatitis

Methylcyclohexane [108-87-2] Cyclohexylmethane, Hexahydrotoluene C7H14 98 0.770 100 500 2000 400 1600 500 630 Narcosis; irritation × × Irritation; narcosis; Methylcyclohexanol [25639-42-3] Hexahydrocresol, Hexahydromethylphenol C H O 114 0.920 155 100 470 50 235 500 × × 7 14 liver; kidney

Methylcyclohexanone [583-60-8] 2-Methylcyclohexanone C21H36O3 112 0.930 165 100 460 50 230 50 Irritation; narcosis × × Not Rec- ommended Methyl Ether (115-10-6) see dimetyl Ether C H O 46 23 1000 NR 2 6 Explosion Hazard

Methyl ethyl ketone (MEK) [78-93-3] Methyl acetone, Methyl ethyl ketone C4H8O 72 0.810 80 200 590 200 590 200 5.4 Irritation; CNS × × 2-Butanone peroxide, Ethyl methyl ketone Irritation; liver; Methyl ethyl ketone peroxide [1338-23-4] peroxide, MEKP, MEK peroxide, Methyl ethyl C H O 176 1.120 0.2 1.5 Please call to discuss 8 18 6 kidney ketone hydroperoxide Irritation; narco- Methyl ester of formic acid, Methyl Methyl formate [107-31-3] C H O 65 0.698 32 100 250 100 250 50 600 sis.; pulmonary × × methanoate 2 4 2 edema Radioctive Methyl iodide [74-88-4] Iodomethane, Monoiodomethane CH I 142 2.280 42 5 2 0.3 CNS; irritation × 3 Iodines Isoamyl methyl ketone, Isopentyl methyl Irritation; narcosis; Methyl isoamyl ketone [110-12-3] ketone, 2-Methyl-5-hexanone, 5-Meth- C H O 114 0.810 144 100 475 50 240 20 0.12 Please call to discuss 7 14 liver; kidney yl-2-hexanone, MIAK Isobutylmethylcarbinol, Methyl amyl Irritation; Methyl isobutyl carbinol [108-11-2] C H O 102 0.810 132 25 100 25 100 25 0.07 × × alcohol, 4-Methyl-2-pentanol, MIBC 6 14 anesthesia 2-Pentanone,4-methyl-; Hexone; MIBK; Irritation; narcosis; Methyl isobutyl ketone [108-10-1] C H O 100 0.800 116 50 50 100 0.68 × × Isopropylacetone 6 14 liver; kidney p:20 Met–Nit Chemical Guide

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Methyl isopropyl ketone [563-80-4] 3-Methyl-2-butanone, 3-Methyl butan-2- C5H10O 86 0.810 93 200 705 200 1.9 Irritation; narcosis Please call to discuss one, MIPK Mercaptomethane, Methanethiol, Methyl Not Recom- Methyl mercaptan [74-93-1] CH S 48 1.001 6 10 20 0.5 1 0.5 Irritation; CNS NR sulfhydrate 4 mended Methacrylate monomer, Methyl ester of Irritation; Methyl methacrylate [80-62-6] methacrylic acid, Methyl-2-methyl-2-pro- C H O 100 94.000 101 100 410 100 410 50 0.083 × × 5 8 2 dermatitis; penoate Methyl orthosilicate, Tetramethoxysilane, Not Recom- Ocular (severe); Methyl silicate [681-84-5] Tetramethyl ester of silicic acid, Tetramethyl C H O Si 152 1.020 121 1 6 1 NR 4 12 4 mended lung silicate AMS, Isopropenyl benzene, 1-Meth- Irritation; a Methyl styrene [98-83-9] C H 118 0.910 152 100 480 50 240 100 0.29 × × yl-1-phenylethylene, 2-Phenyl propylene 9 10 dermatitis; CNS Not Recom- 4-Amino-6-(1,1-dimethylethyl)-3-(methylth- mended, Metribuzin [20187-64-9] C H 214 5 5 Anemia NR io)-1,2,4-triazin-5(4H)-one 9 10 No Detection 2-Carbomethoxy-1-methylvinyl dimethyl Not Recom- phosphate, Mevinphos [Note: Commercial mended, Mevinphos [7786-34-7] C H O P 224 106 0.09 0.01 0.01 Cholinergic NR product is a mixture of the cis- & 7 13 6 High trans-isomers.] Toxicity Biotite, Lepidolite, Margarite, Muscovite, Mica [12001-26-2] Al K O Si 3 Pneumoconiosis × Phlogopite, Roscoelite, Zimmwaldite 2 2 6 3-Hydroxy-N-methylcrotonamide dimethyl- Not Recom- Monocrotophos [6923-22-4] C H NO P 223 125.000 0.25 0.25 Cholinergic NR phosphate, Monocron 7 14 5 mended Irritation; ocular; Naphthalene [91-20-3] Naphthalin, Tar camphor, White tar C H 128 1.150 218 10 50 10 50 10 0.084 Please call to discuss 10 8 blood Not Recom- 2 Naphthylamine [91-59-8] 2-Aminonaphthalene, 2-Naphthylamine C H N 143 1.060 306 0.001 Cancer (bladder) NR 10 9 mended Dermatitis; pneumoconiosis; Nickel kidney Elemental/metal [7440-02-0] Nickel metal: Elemental nickel, Nickel Not Recom- CNS; irritation; Ni 59 1.5 0.015 NR Soluble compounds, as Ni catalyst. mended dermatitis Insoluble compounds, as Ni Cancer (lung); irritation; dermatitis Not Recom- Nickel carbonyl [13463-39-3], as Ni Nickel tetracarbonyl, Tetracarbonyl nickel C NiO 171 1.320 43 0.001 0.007 0.001 0.007 0.3 Irritation; CNS NR 4 4 mended Cancer (lung);

Nickel subsulfide [12035-72-2], as Ni Ni3S2 240 790 0.1 irritation; × dermatitis Ninhydrin monohydrate, 1,2,3-triketohydrindene monohydrate, 1,2,3-indantrione

Ninhydrin (485-47-2) monohydrate, 2,2-dihydroxy-1,3-indandi- C9H6O4 Irritation × × one, 1H-indene-1,2,3-trione monohydrate, triketohydrindene hydrate Do not use Irritation; corro- Barium dinitrate, Barium(II) nitrate (1:2), with com- Nitric acid [7697-37-2] HNO 63 1.500 0.5 0.5 sion; pulmonary × × × Barium salt of nitric acid 3 bustable edema organics p:21 Nit–Par Chemical Guide

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1-Nitropropane [108-03-2] Nitropropane, 1-NP C3H7NO2 89 100.000 132 25 90 25 90 25 11 Amines or Irritation; liver × × Hydrocar- bons Do not use with Dimethylnitromethane, iso-Nitropropane, 2-Nitropropane [79-46-9] C H NO 89 0.990 120 25 90 5 70 Amines or Irritation; liver × × 2-NP 3 7 2 Hydrocar- bons Reproductive; Dinitrogen monoxide, Hyponitrous acid Not Recom- Nitrous oxide [10024-97-2] N O 43 0.001 -89 50 25 46 blood; neuropathy; NR anhydride, Laughing gas 2 mended asphyxiation CNS; narcosis; Nonane [111-84-2], all isomers n-Nonane, Nonyl hydride C H 128 0.720 151 200 200 1050 47 × × 9 20 dermatitis; lung Nuisance particulates, see Particulates (Insoluble) Not Otherwise Classified × (PNOC) Not Recom- n Octane [111-65-9] normal-Octane C H 114 0.700 126 300 2350 75 350 500 48 Irritation; narcosis NR 8 18 mended Oil mist, mineral 5 Lung × × × Not Recom- Osmium tetroxide [20816-12-0], as Os Osmic acid anhydride, Osmium oxide O Os 254 5.100 0.000 0.000 0.000 0.002 Irritation; vision NR 4 mended Ethanedioic acid, Oxalic acid (aqueous), Oxalic acid [144-62-7] C H O 90 1.900 1 1 Irritation; burns Please call to discuss Oxalic acid dihydrate 2 2 4 Irritation; Difluorine monoxide, Fluorine monoxide, Not Recom- Oxygen difluoride [7783-41-7] F O 54 0.002 -145 0.05 0.1 0.05 0.1 0.1 pulmonary edema; NR Oxygen fluoride 2 mended kidney

Paraffin wax fume [8002-74-2] Paraffin fume, Paraffin scale fume CnH2n+2 47 2 Irritation × × p:22 Par–Pht Chemical Guide

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Classified (PNOC) 3 Lung × Inhalable particulate Lung Respirable particulate Not Recom- Pentaborane [19624-22-7] Pentaboron nonahydride C H NO PS 63 0.620 60 0.005 0.01 0.005 0.01 0.005 0.9 CNS NR 10 14 5 mended Halowax® 1013; 1,2,3,4,5-Penta- Chloracne; liver; Pentachloronaphthalene [1321-64-8] C H Cl 300 1.670 326 0.5 0.5 Please call to discuss chloro-naphthalene 10 3 5 CNS n Pentane, all isomers [78-78-4; 109 66 Pentane, normal-Pentane C H 72 0.630 36 1000 2950 120 350 1000 400 Irritation; narcosis × × 0; 463-82-1] 5 12 PCM, PMM, Trichloromethane sulfenyl Not Recom- Irritation; pulmo- Perchloromethyl mercaptan [594-42-3] CCl S 186 0.1 0.8 0.1 0.8 NR chloride, Trichloromethyl sulfur chloride 4 meded nary edema Chlorine fluoride oxide, Chlorine oxyfluo- Not Recom- Perchloryl fluoride [7616-94-6] ClFO 102 3 13.5 3 14 Irritation; blood NR ride, Trioxychlorofluoride meded Perlite [93763-70-3] Expanded perlite 15 5 10 5 Irritation × Carbolic acid, Hydroxybenzene, Irritation; CNS; Phenol [108-95-2] Monohydroxybenzene, Phenyl alcohol, C H O 94 1.060 182 5 19 5 19 5 0.04 × × 6 6 blood Phenyl hydroxide Dibenzothiazine, Fenothiazine, Thiodiphe- Not Recom- Irritation; ocular; Phenothiazine [92-84-2] C H NS 199 5 5 NR nylamine 12 9 meded liver; kidney Not Recom- Phenylenediamine [95-54-5] C H N 108 0.1 Irritation; liver NR 6 8 2 meded Not Recom- Phenylenediamine [108-45-2] C H N 108 0.1 Irritation; liver NR 6 8 2 meded Dermatitis; Not Recom- urticaria; Phenylenediamine [106-50-3] C H N 108 0.1 NR 6 8 2 meded irritation; blood; sensitization Diphenyl ether, Diphenyl oxide, Phenoxy Phenyl ether [101-84-8], vapor C H O 170 1.080 259 1 7 1 7 1 0.04 Irritation; nausea × × benzene, Phenyl oxide 12 10 Carbon oxychloride, Carbonyl chloride, Irritation; anoxia; Phosgene [75-44-5] CCl O 99 0.004 8 0.1 0.4 0.02 0.9 NR Carbonyl dichloride, Chloroformyl chloride 2 pulmonary edema Hydrogen phosphide, Phosphorated Not Recom- Phosphine [7803-51-2] hydrogen, Phosphorus hydride, Phosphorus H P 34 0.001 -88 0.3 0.4 0.3 0.4 0.1 0.51 Irritation; CNS; GI NR 3 mended trihydride Orthophosphoric acid, Phosphoric acid Phosphoric acid [7664-38-2] H O P 98 1.870 276 1 1 1 Irritation × × × (aqueous), White phosphoric acid 3 4 Irritation; liver; Phosphorus (yellow) [7723-14-0] Elemental phosphorus, White phosphorus P 124 0.1 0.1 × kidney; CVS; GI Pentachlorophosphorus, Phosphoric Phosphorus pentachloride [10026-13-8] Cl P 208 3.600 0.1 0.1 Irritation NR chloride, Phosphorus perchloride 5 Phosphorus persulfide, Phosphorus sulfide, Not Recom- Phosphorus pentasulfide [1314-80-3] PS 222 2.090 -85 1 1 Irritation NR Sulfur phosphide 5 mended

Phosphorus trichloride [7719-12-2] Phosphorus chloride Cl3P 138 1.580 76 0.5 3 0.2 1.5 0.5 Irritation Please call to discuss 1,2-Benzenedicarboxylic anhydride; PAN; Irritation; Phthalic anhydride [85-44-9] C H O 148 1.530 1 2 0.053 Please call to discuss Phthalic acid anhydride 8 4 3 sensitization p:23 Pht–Rho Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

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Picric acid [88-89-1] Phenol trinitrate; 2,4,6-Trinitrophenol C6H3N3O7 229 1.760 300 0.1 0.1 at Boiling irritation; ocular; NR Point sensitization Irritation; Not Recom- Piperazine dihydrochloride [142-64-3] Piperazine hydrochloride C H Cl N 159 5 burns; asthma; NR 4 12 2 2 mended sensitization Platinum [7440-06-4] IrritationAsthma; Synonyms vary depending upon the specific 195 Metal Pt 21.450 3827 0.002 0.002 irritation; × soluble platinum salt (Varies) Soluble salts, as Pt sensitization Potassium hydroxide [1310-58-3] Caustic potash, Lye, Potassium hydrate HKO 56 2.040 405 2 Irritation; corrosion × Bottled gas, Dimethyl methane, n-Propane, Not Recom- Propane [74-98-6] C H 44 0.002 -42 1000 1800 1000 1800 1000 16000 Asphyxiation NR Propyl hydride 3 8 mended Ethyl carbinol, 1-Propanol, n-Propanol, Irritation; Propanol (n-Propyl alcohol) [71-23-8] C H O 60 0.810 97 200 500 200 500 2.6 × × Propyl alcohol 3 8 (narcosis) 1-Propyn-3-ol; 2-Propyn-1-ol; 2-Propynyl Irritation; liver; Propargyl alcohol [107-19-7] C H O 56 0.970 114 1 1 2 × × alcohol 3 4 kidney Not Recom- b Propiolactone [57-57-8] C H O 72 0.5 Irritation NR 3 4 2 mended Carboxyethane, Ethanecarboxylic acid,

Propionic acid [79-09-4] Ethylformic acid, Metacetonic acid, Methyl C3H6O2 74 0.990 141 10 10 10 Irritation Please call to discuss acetic acid, Propanoic acid Aprocarb®; o-Isopropoxyphenyl-N-meth- Not Recom- Propoxur [114-26-1] ylcarbamate; N-Methyl-2-isopropoxyphe- C H NO 209 0.5 Cholinergic NR 11 15 3 mended nyl-carbamate n Propyl acetate [109-60-4] Propylacetate, n-Propyl ester of acetic acid C5H10O2 102 0.840 102 200 250 200 200 0.67 Irritation × × Irritation; CNS; Propylene dichloride [78-87-5] Dichloro-1,2-propane; 1,2-Dichloropropane C H Cl 113 1.160 97 75 75 0.25 × × 3 6 2 liver; kidney PGDN; Propylene glycol-1,2-dinitrate; Not Recom- CVS; headache; Propylene glycol dinitrate [6423-43-4] C H N O 166 0.05 NR 1,2-Propylene glycol dinitrate 3 6 2 6 mended CNS, anoxia Propylene glycol monomethyl ether Dipropylene glycol monomethyl ether; C H O 90 0.960 120 100 100 10 Irritation; CNS × × [107-98-2] Dowanol® 50B 4 10 2 2-Methylaziridine, 2-Methylethyleneimine,

Propylene imine [75-55-8] Propyleneimine, Propylene imine C3H7N 57 0.800 66 2 Irritation; CNS × × (inhibited), Propylenimine 1,2-Epoxy propane; Methyl ethylene Irritation; CNS; Propylene oxide [75-56-9] oxide; Methyloxirane; Propene oxide; C H O 58 0.830 34 20 20 2.5 44 × × 3 6 dermatitis 1,2-Propylene oxide Blood; cyanosis; n Propyl nitrate [627-13-4] Propyl ester of nitric acid C H NO 105 1.070 111 25 25 25 50 Please call to discuss 3 7 3 anoxia Irritation; CNS; Pyridine [110-86-1] Azabenzene, Azine C H N 70 0.980 115 5 15 5 15 5 0.17 × × 5 5 liver; kidney; blood Quartz, see Silica — Crystalline Cristobalite, Quartz, Tridymite, Tripoli 60 2230 30 0.05 × 1,4-Benzoquinone; p-Benzoquinone; Quinone [106-51-4] C H O 108 1.320 0.4 0.4 0.1 0.084 Irritation; vision Please call to discuss 1,4-Cyclohexadiene dioxide; p-Quinone 6 4 2 Rhodium [7440-16-6] Metal 103 1 Irritation Rhodium metal: Elemental rhodium Rh × × × × Insoluble compounds, as Rh (Varies) 1 Irritation Soluble compounds, as Rh (Varies) 0.01 Irritation p:24 Sel–Sul Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

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Silicon [7440-21-3] free in nature, but is found in silicon dioxide H4Si 28 2.330 2600 15 5 10 5 Lung × (silica) & in various silicates Carbon silicide; Carborundum®; Silicon Silicon carbide [409-21-2] CSi 40 3.230 10 Lung × monocarbide Not Recom- Silicon tetrahydride [7803-62-5] Monosilane, Silane, Silicane H Si 32 0.003 -112 5 Irritation NR 4 mended Silver [7440-22-4] Argyria (skin, 108 0.1 Metal Silver metal: Argentum Ag eyes, mucous × (Varies) 0.01 Soluble compounds, as Ag membrane) Soapstone 6 Total particulate Massive talc, Soapstone silicate, Steatite H Mg O Si Pneumoconiosis × 2 3 12 4 3 Respirable particulate Sodium azide [26628-22-8] Not Recom- as Sodium azide Azide, Azium, Sodium salt of hydrazoic acid N Na 65 CNS; CVS; lung NR 3 mended as Hydrazoic acid vapor Monosodium salt of sulfurous acid, Sodium

Sodium bisulfite [7631-90-5] acid bisulfite, Sodium bisulphite, Sodium HNaO3S 104 5 Irritation × hydrogen sulfite

Sodium fluoroacetate [62-74-8] SFA, Sodium monofluoroacetate C2H2FNaO2 100 0.05 0.05 CNS; CVS ×

Sodium hydroxide [1310-73-2] Caustic soda, Lye, Soda lye, Sodium hydrate HNaO 40 2 2 Irritation × Disodium pyrosulfite, Sodium metabisulph- Sodium metabisulfite [7681-57-4] Na.O S 190 5 Irritation × ite, Sodium pyrosulfite 2 5 2

Stearates(l) C18H39NO2 (Varies) 10 Irritation × Antimony hydride, Antimony trihydride, Not Recom- Stibine [7803-52-3] H Sb 125 0.1 0.5 0.1 0.5 Irritation; blood NR Hydrogen antimonide 3 mended t, Mineral spirits, Petroleum solvent, Irritation; narcosis; Stoddard solvent [8052-41-3] 140 0.780 220 500 2900 350 1800 × × Spotting naphtha kidney Not Recom- Strontium chromate [7789-06-2], as Cr CrO Sr 204 0.001 Cancer (lung) NR 4 mended Ethenyl benzene, Phenylethylene, Styrene Neurotoxicity; Styrene, monomer [100-42-5] C H 104 0.910 146 100 50 20 0.32 × × monomer, Styrol, Vinyl benzene 8 8 irritation; CNS Sulfurous acid anhydride, Sulfurous oxide, Sulfur dioxide [7446-09-5] O S 64 0.003 -10 2 2 0.5 1.1 Irritation × Sulfur oxide 2 Not Recom- Sulfur hexafluoride [2551-62-4] Sulfur fluoride F S 146 0.006 1000 6000 1000 6000 1000 Asphyxiation NR 6 mended Do not heat Battery acid, Hydrogen sulfate, Oil of vitriol, Irritation; cancer Sulfuric acid [7664-93-9] H O S 98 1.840 296 1 1 over 60 × × × Sulfuric acid (aqueous) 2 4 (larnyx) degree C Sulfur chloride, Sulfur subchloride, Not Recom- Sulfur monochloride [10025-67-9] Cl S 135 1 1 Irritation NR Thiosulfurous dichloride 2 2 mended Not Recom- Sulfur pentafluoride [5714-22-7] Disulfur decafluoride, Sulfur decafluoride F S 254 0.011 29 0.025 0.25 0.01 0.1 0.025 Irritation NR 10 2 mended Not Recom- Sulfur tetrafluoride [7783-60-0] Tetrafluorosulfurane F S 108 0.005 -40 0.1 Irritation NR 4 mended Not Recom- Sulfuryl fluoride [2699-79-8] Sulfur difluoride dioxide, Vikane® F O S 102 0.004 -55 5 20 5 20 Irritation; CNS NR 2 2 mended Bolstar®, O-Ethyl O-(4-methylthio)phenyl Not Recom- Sulprofos [35400-43-2] C H O PS 322 1 Cholinergic NR S-propylphosphorodithioate 12 19 2 3 mended p:25 Tal–Tri Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

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Talc (containing asbestos fibers) H2Mg3O12Si4 asbes- Lung; asbestosis × tos TLV Bladafum®, Dithion®, Sulfotep, Tetraethyl Not Recom- TEDP, see Sulfotep dithionopyrophosphate, Tetraethyl C H O P S 0.2 0.2 NR 8 20 5 2 2 mended dithiopyrophosphate, Thiotepp Tellurium [13494-80-9] and compounds, CNS; cyanosis; Aurum paradoxum, Metallum problematum Te 128 6.240 990 0.1 0.1 × excepthydrogen telluride, as Te liver Not Recom- Tellurium hexafluoride [7783-80-4] Tellurium fluoride F Te 242 0.010 0.02 0.2 0.02 0.2 Irritation NR 6 mended Ethyl pyrophosphate, Tetraethyl pyrophos- Not Recom- TEPP [107-49-3] C H O P 290 0.05 0.05 Cholinergic NR phate, Tetron® 8 20 7 2 mended 1,1,2,2 Tetrachloro-1,2-difluoroethane CNS; pulmonary C Cl F 204 1.650 92 500 500 1000 Please call to discuss [76-12-0] 2 4 2 edema

1,1,2,2 Tetrachloroethane [79-34-5] C2H2Cl4 168 1.590 146 1 1 1 1.5 Liver; CNS; GI × ×

® Tetrachloronaphthalene [1335-88-2] Halowax , Nibren wax, Seekay wax C10H4Cl4 266 331 2 2 Liver Please call to discuss

Tetraethyl lead [78-00-2], as Pb Lead tetraethyl, TEL, Tetraethylplumbane C8H20Pb 323 1.650 100 0.075 0.075 CNS Please call to discuss Diethylene oxide; 1,4-Epoxybutane; Tetrahydrofuran [109-99-9] C H O 72 0.890 65 200 590 200 590 50 2 Irritation; narcosis × × Tetramethylene oxide; THF 4 8

Tetranitromethane [509-14-8] Tetan, TNM CN4O8 196 1.620 126 1 8 1 8 1 Irritation NR N-Methyl-N,2,4,6-tetranitroaniline; Explodes Irritation; liver; Tetryl [479-45-8] Nitramine; 2,4,6-Tetryl; 2,4,6-Trinitrophe- C H N O 287 1.570 187 1.5 1.5 at Boiling NR 7 5 5 8 dermatitis nyl-N-methylnitramine Point Thallium, elemental [7440-28-0], and Synonyms vary depending upon the specific 204 1457 0.1 0.1 Irritation; CNS; CVS × soluble compounds, as Tl soluble thallium compound (Varies) 4,4 Thiobis(6-tert-butyl-m-cresol) C H O S 359 1.100 150 10 Liver; kidney Please call to discuss [96-69-5] 22 30 2 Acetyl mercaptan, Mercaptoacetate, Not Recom- Thioglycolic acid [68-11-1] Mercaptoacetic acid, 2-Mercaptoacetic C H O S 92 1 1 4 Irritation; lung NR 2 4 2 mended acid, 2-Thioglycolic acid, Thiovanic acid Sulfinyl chloride, Sulfur chloride oxide,

Thionyl chloride [7719-09-7] Sulfurous dichloride, Sulfurous oxychloride, Cl2OS 119 1 Irritation Thionyl dichloride Tin [7440-31-5] Stannosis Metal 119 2

Oxide & inorganic compounds, except Stannosis × tin (Varies) 2 CNS; immunotoxic- hydride, as Sn (Varies) 0.1 ity; irritation Organic compounds, as Sn

Titanium dioxide [13463-67-7] Rutile, Titanium oxide, Titanium peroxide O2Ti 80 4.600 1860 15 10 Lung × 1-Methyl-2,4,6-trinitrobenzene; TNT; Trinitro- Toluene [108-88-3] C H 92 0.870 110 50 1.5 100 0.5 50 2.9 CNS × × toluene; sym-Trinitrotoluene; Trinitrotoluol 7 8 Toluene-2,4-diisocyanate (TDI) [584- Irritation; C H N O 174 1.220 251 0.005 0.01 0.01 0.25 NR 84-9] 9 6 2 2 sensitization 3-Amino-1-methylbenzene, 1-Aminophenyl- methane, m-Aminotoluene, 3-Methylaniline, Toluidine [95-53-4] C H N 107 200 2 2 0.01 0.17 Anoxia; kidney Please call to discuss 3-Methylbenzenamine, 3-Toluidine, 7 9 m-Tolylamine

1,2,4 Trichlorobenzene [120-82-1] C6H3Cl3 181 1.450 213 5 5 1.4 Irritation Please call to discuss

1,1,2 Trichloroethane [79-00-5] C2H3Cl3 133 1.440 114 10 10 CNS; liver × × p:26 Tri–Vin Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

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Trichlorofluoromethane [75-69-4] Refrigerant 11; Trichlorofluoromethane; CCl3F 137 1000 5600 1000 5600 CVS; CNS Trichloromonofluoromethane

1,2,3 Trichloropropane [96-18-4] C3H5Cl3 147 1.390 142 10 Liver; kidney × ×

Triethylamine [121-44-8] TEA 101 0.730 90 10 50 10 50 10 0.48 Irritation; vision × × Not Recom- Trifluobromomethane [75-63-8] 149 1000 CNS; CVS NR mended 1,2,4-Benzenetricarboxylic anhydride; Bleeding (lung); Not Recom- Trimellitic anhydride [552-30-7] 4-Carboxyphthalic anhydride; TMA; TMAN; C H O 192 0.005 0.04 immunotoxicity; NR 9 4 5 mended Trimellic acid anhydride sensitization Not Recom- Trimethylamine [75-50-3] N,N-Dimethylmethanamine; TMA C H O 59 0.003 -4 5 10 24 Irritation NR 12 18 4 mended Trimethyl benzene (mixed isomers) Irritation; CNS; C H 120 176 25 25 20 0.55 × × [25551-13-7] 9 12 blood Methyl phosphite, Trimethoxyphosphine, Not Recom- Trimethyl phosphite [121-45-9] C H O P 124 1.050 108 2 2 10 0.001 Irritation NR Trimethyl ester of phosphorous acid 3 9 3 mended Explodes 1-Methyl-2,4,6-trinitrobenzene; TNT; Trinitro- Irritation; liver; Trinitrotoluene (TNT) [118-96-7] C H N O 227 1.650 0.5 1.5 at Boiling NR toluene; sym-Trinitrotoluene; Trinitrotoluol 7 5 3 6 blood Point TCP, TOCP, Tri-o-cresyl ester of phosphoric Triorthocresyl phosphate [78-30-8] C H O P 368 1.200 410 0.1 CNS; cholingeric Please call to discuss acid, Tri-o-cresyl phosphate 21 21 4

Triphenyl amine [603-34-9] C18H15N 245 0.770 365 5 Irritation Please call to discuss Tungsten [7440-33-7], as W 184 Irritation Metal and insoluble compounds Tungsten metal, Wolfram W (Varies) 19.300 5 × CNS; irritation Soluble compounds (Varies) 1 Gumspirits, Gum turpentine, Spirits of turpentine, Steam distilled turpentine, Turpentine [8006-64-2] 136 0.860 154 100 560 100 560 100 Irritation × × Sulfate wood turpentine, Turps, Wood turpentine

Urea (57-13-6) CH4N2O × × Highly

Uric Acid (69-93-2) C5H4N4O3 168 Toxic when × × heated Uranium metal: Uranium I Synonyms of Uranium (natural) [7440-61-1] 238 Kidney; blood; other insoluble uranium compounds vary U 0.2 0.25 × Soluble and insoluble compounds, as U (Varies) cancer depending upon the specific compound Divanadium pentoxide dust, Vanadic Vanadium pentoxide [1314-62-1], as anhydride dust, Vanadium oxide dust, O V 182 0.05 Irritation; lung × × × V2O5 Respirable dust or fume 5 2 Vanadium pentaoxide dust Vegetable oil mists — 10 Lung × × × 1-Acetoxyethylene, Ethenyl acetate, Ethenyl

Vinyl acetate [108-05-4] ethanoate, VAC, Vinyl acetate monomer, C4H6O2 86 0.930 73 10 10 10 0.5 Irritation × × Vinyl ethanoate Bromoethene, Bromoethylene, Monobro- Vinyl bromide [593-60-2] C H Br 107 0.005 16 0.5 Liver; CNS; cancer Please call to discuss moethylene 2 3 Chloroethene, Chloroethylene, Ethylene CNS; cancer; liver; monochloride, Monochloroethene, Vinyl chloride [75-01-4] C H Cl 63 0.003 -14 5 3000 CVS; Raynaud’s × Monochloroethylene, VC, Vinyl chloride 2 3 syndrome monomer (VCM) Fluoroethene, Fluoroethylene, Monofluoro- Vinyl fluoride [75-02-5] C H F 46 0 -72 1 Liver; cancer Please call to discuss ethylene, Vinyl fluoride monomer 2 3 p:27 Vin–Zir Chemical Guide

SUBSTANCE CHARACTERISTICS COMMENTS RECOMMENDED FILTER TYPE

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Vinylidene chloride [75-35-4] roethylene; VDC; Vinylidene chloride C2H2Cl2 97 1.210 37 5 5 2 CNS; liver; kidney Please call to discuss monomer; Vinylidene dichloride Difluoro-1,1-ethylene; 1,1-Difluoroethene;

Vinylidene fluoride [75-38-7] 1,1-Difluoroethylene; Halocarbon 1132A; C2H2F2 64 0.003 -83 500 Liver Please call to discuss VDF; Vinylidene difluoride Ethenylmethylbenzene, Methylstyrene, Vinyl toluene [25013-15-4] C H 118 0.890 170 100 480 100 480 100 10 Irritation × × Tolyethylene 27 30 Ligroin, Painters naphtha, Petroleum ether,

VM & P Naphtha [8032-32-4] Petroleum spirit, Refined solvent naphtha, C7H7BrMg 114 80 350 1800 Irritation; CNS Please call to discuss Varnish makers’ & painters’ naphtha 3-(alpha-Acetonyl)-benzyl-4-hydroxy-

Warfarin [81-81-2] coumarin, 4-Hydroxy-3-(3-oxo-1-phenyl C19H16O4 308 161 0.1 0.1 Blood; bleeding Please call to discuss butyl)-2H-1-benzopyran-2-one, WARF Metal fume fever; Welding fumes 5 × × × irritation Cancer; irritation; Wood dust mucostasis; (Certain hard woods as beech & oak) 1 dermatitis × Soft wood Irritation; dermatitis; lung

Xylene [1330-20-7] 1,3-Dimethylbenzene; meta-Xylene; m-Xylol C8H10 106 0.860 138 100 435 100 435 100 1.1 Irritation × × Aminodimethylbenzene, Aminoxylene, Anoxia; liver; Xylidine (mixed isomers) [1300-73-8] Dimethylaminobenzene, Dimethylaniline, C H N 121 0.980 213 5 25 2 10 5 0.056 × × 48 66 6 kidney Xylidine isomers (e.g., 2,4-Dimethylaniline) Yttrium [7440-65-5], metal and Yttrium metal C H O Y 89 4.470 1 1 Fibrosis × compounds, as Y 39 91 14 5 Irritation; pulmo- Zinc chloride fume [7646-85-7] Zinc dichloride fume Cl Zn 136 1 1 × × 2 nary edema Zinc chromates [13530-65-9; 11103-86- (Varies) 0.01 Cancer (lung) × 9;37300-23-5], as Cr Lung; metal fume Zinc oxide [1314-13-2] Dust Zinc peroxide OZn 81 5.610 5 5 fever × Lung Zirconium [7440-67-7] and compounds, Zirconium metal: Zirconium C H O Zr 91 6.510 5 5 Lung × as Zr 8 20 4 p:28 Chemical Guide

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