DOCSLIB.ORG

Sulfuric Acid

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Sulfuric Acid Right to Know Hazardous Substance Fact Sheet Common Name: SULFURIC ACID Synonyms: Battery Acid; Hydrogen Sulfate; Oil of Vitriol CAS Number: 7664-93-9 Chemical Name: Sulfuric Acid RTK Substance Number: 1761 Date: December 2008 Revision: March 2016 DOT Number: UN 1830 Description and Use EMERGENCY RESPONDERS >>>> SEE BACK PAGE Sulfuric Acid is a clear, colorless to brown, odorless liquid. It Hazard Summary is used to make storage batteries, fertilizers, paper products, Hazard Rating NJDHSS NFPA textiles, explosives, and pharmaceuticals, and in steel and iron HEALTH - 3 production. FLAMMABILITY - 0 REACTIVITY - 2 W CARCINOGEN Reasons for Citation CORROSIVE AND REACTIVE Sulfuric Acid is on the Right to Know Hazardous Substance OXIDIZER List because it is cited by OSHA, ACGIH, DOT, NIOSH, POISONOUS GASES ARE PRODUCED IN FIRE NTP, DEP, IARC, NFPA and EPA. CONTAINERS MAY EXPLODE IN FIRE This chemical is on the Special Health Hazard Substance DO NOT USE WATER List. Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious; 4=severe Sulfuric Acid can affect you when inhaled. Sulfuric Acid is a CARCINOGEN. HANDLE WITH SEE GLOSSARY ON PAGE 5. EXTREME CAUTION. Sulfuric Acid is CORROSIVE and contact can severely irritate and burn the skin and eyes, and may lead to FIRST AID blindness. Eye Contact Inhaling Sulfuric Acid can irritate the nose and throat. Immediately flush with large amounts of water for at least 30 Inhaling Sulfuric Acid can irritate the lungs. Higher minutes, lifting upper and lower lids. Remove contact exposures may cause a build-up of fluid in the lungs lenses, if worn, while flushing. Seek medical attention (pulmonary edema), a medical emergency. immediately. Exposure can cause headache, nausea and vomiting. Repeated exposure can cause permanent lung damage, Skin Contact damage to teeth, and upset stomach. Quickly remove contaminated clothing. Immediately wash Sulfuric Acid is REACTIVE and a DANGEROUS contaminated skin with large amounts of soap and water. EXPLOSION HAZARD. Seek medical attention immediately. Sulfuric Acid is not combustible, but it is a STRONG OXIDIZER that enhances the combustion of other Inhalation substances. Remove the person from exposure. Begin rescue breathing (using universal precautions) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. Workplace Exposure Limits Medical observation is recommended for 24 to 48 hours after OSHA: The legal airborne permissible exposure limit (PEL) is overexposure, as pulmonary edema may be delayed. 1 mg/m3 averaged over an 8-hour workshift. NIOSH: The recommended airborne exposure limit (REL) is EMERGENCY NUMBERS 1 mg/m3 averaged over a 10-hour workshift. Poison Control: 1-800-222-1222 CHEMTREC: 1-800-424-9300 ACGIH: The threshold limit value (TLV) is 0.2 mg/m3 (as the NJDEP Hotline: 1-877-927-6337 Thoracic fraction) averaged over an 8-hour workshift. National Response Center: 1-800-424-8802 Sulfuric Acid is a CARCINOGEN in humans. There may be no safe level of exposure to a carcinogen, so all contact should be reduced to the lowest possible level. SULFURIC ACID Page 2 of 6 Determining Your Exposure Reproductive Hazard While Sulfuric Acid has been tested, further testing is Read the product manufacturer’s Material Safety Data required to assess its potential to cause reproductive harm. Sheet (MSDS) and the label to determine product ingredients and important safety and health information Other Effects about the product mixture. Sulfuric Acid can irritate the lungs. Repeated exposure may cause bronchitis to develop with coughing, phlegm, For each individual hazardous ingredient, read the New and/or shortness of breath. Jersey Department of Health Hazardous Substance Fact Repeated exposure can cause permanent lung damage, Sheet, available on the RTK website damage to teeth, and upset stomach. (http://nj.gov/health/workplacehealthandsafety/right-to- know) or in your facility’s RTK Central File or Hazard Communication Standard file. Medical You have a right to this information under the New Jersey Medical Testing Worker and Community Right to Know Act, the Public Before beginning employment and at regular times thereafter, Employees Occupational Safety and Health (PEOSH) Act (at least annually), the following are recommended: if you are a public worker in New Jersey, and under the federal Occupational Safety and Health Act (OSHA) if you Lung function tests are a private worker. If symptoms develop or overexposure is suspected, the The New Jersey Right to Know Act requires most following is recommended: employers to label chemicals in the workplace and requires public employers to provide their employees with Consider chest x-ray after acute overexposure information concerning chemical hazards and controls. The federal OSHA Hazard Communication Standard (29 Any evaluation should include a careful history of past and present symptoms with an exam. Medical tests that look for CFR 1910.1200) and the PEOSH Hazard Communication damage already done are not a substitute for controlling Standard (N.J.A.C. 12:100-7) require employers to provide exposure. similar information and training to their employees. Request copies of your medical testing. You have a legal right This Fact Sheet is a summary of available information to this information under the OSHA Access to Employee regarding the health hazards that may result from exposure. Exposure and Medical Records Standard (29 CFR 1910.1020). Duration of exposure, concentration of the substance and other factors will affect your susceptibility to any of the potential Mixed Exposures effects described below. Smoking can cause heart disease, lung cancer, emphysema, and other respiratory problems. It may worsen respiratory conditions caused by chemical exposure. Even if Health Hazard Information you have smoked for a long time, stopping now will reduce your risk of developing health problems. Acute Health Effects The following acute (short-term) health effects may occur immediately or shortly after exposure to Sulfuric Acid: Contact can severely irritate and burn the skin and eyes, and may lead to blindness. Inhaling Sulfuric Acid can irritate the nose and throat. Inhaling Sulfuric Acid can irritate the lungs causing coughing and/or shortness of breath. Higher exposures may cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency, with severe shortness of breath. Exposure can cause headache, nausea and vomiting. Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Sulfuric Acid and can last for months or years: Cancer Hazard Sulfuric Acid is a CARCINOGEN in humans. There is evidence that occupational exposure to strong inorganic acid mists containing Sulfuric Acid cause cancer of the larynx in humans. Many scientists believe there is no safe level of exposure to a carcinogen. SULFURIC ACID Page 3 of 6 Workplace Controls and Practices Eye Protection Very toxic chemicals, or those that are reproductive hazards or Wear non-vented, impact resistant goggles when working sensitizers, require expert advice on control measures if a less with fumes, gases, or vapors. toxic chemical cannot be substituted. Control measures Wear indirect-vent, impact and splash resistant goggles include: (1) enclosing chemical processes for severely when working with liquids. irritating and corrosive chemicals, (2) using local exhaust Wear a face shield along with goggles when working with ventilation for chemicals that may be harmful with a single corrosive, highly irritating or toxic substances. exposure, and (3) using general ventilation to control exposures to skin and eye irritants. For further information on Respiratory Protection workplace controls, consult the NIOSH document on Control Improper use of respirators is dangerous. Respirators Banding at www.cdc.gov/niosh/topics/ctrlbanding/. should only be used if the employer has implemented a written program that takes into account workplace conditions, The following work practices are also recommended: requirements for worker training, respirator fit testing, and medical exams, as described in the OSHA Respiratory Label process containers. Provide employees with hazard information and training. Protection Standard (29 CFR 1910.134). Monitor airborne chemical concentrations. Use engineering controls if concentrations exceed Where the potential exists for exposure over 0.2 mg/m3, use recommended exposure levels. a NIOSH approved full facepiece respirator with an acid gas Provide eye wash fountains and emergency showers. cartridge specifically approved for Sulfuric Acid, with an R Wash or shower if skin comes in contact with a hazardous or P100 prefilter. Increased protection is obtained from full material. facepiece powered-air purifying respirators. Always wash at the end of the workshift. Leave the area immediately if (1) while wearing a filter or Change into clean clothing if clothing becomes cartridge respirator you can smell, taste, or otherwise detect contaminated. Sulfuric Acid, (2) while wearing particulate filters abnormal Do not take contaminated clothing home. resistance to breathing is experienced, or (3) eye irritation Get special training to wash contaminated clothing. occurs while wearing a full facepiece respirator. Check to Do not eat, smoke, or drink in areas where chemicals are make sure the respirator-to-face seal is still good. If it is, being handled, processed or stored. replace the filter
Load more

Recommended publications
  • Chemical Storage Cabinets
    Storage cabinets Incompatible chemicals must be kept separately to reduce the risk of mixing in case of accidental breakage or response to an emergency within the laboratory. (A starting point is to check the Safety Data Sheet for hazard and storage requirements.) Containers must be kept tightly closed and stored in cabinets which are suitable for the chemical. It is important to check materials which have a shelf life and safely dispose of before the date expires, and generally check the label to ensure it is still suitable and provides the necessary safety information. The condition of the cabinets needs to be checked to ensure that they are providing adequate containment of the materials being stored. Ensure spill trays are used which are capable of holding 110% volume of the largest container being stored in the tray. There may be occasions where the quantities being stored are very small and secondary containment of the chemicals within a cabinet provided would be deemed as providing adequate separation. The table below provides guidance on the type of materials being stored and the type of cabinet which is suitable for that material. This is not a definitive list and does not include ‘Highly Toxic’ materials. Separate guidance is in development. Hazard Group Type of cabinet Safety Sign and suggested Other information Max allowed (where wording applicable) Flammable Liquids Metal flammable storage Flammable liquids must 50 litres of highly flammable cabinet to BS EN 14470- never be stored in a liquid stored in any one E.g. alcohols, toluene, 1:2004, offering minimum refrigerator or freezer laboratory.
    [Show full text]
  • EPA Method 8: Determination of Sulfuric Acid and Sulfur Dioxide
    733 METHOD 8 - DETERMINATION OF SULFURIC ACID AND SULFUR DIOXIDE EMISSIONS FROM STATIONARY SOURCES NOTE: This method does not include all of the specifications (e.g., equipment and supplies) and procedures (e.g., sampling and analytical) essential to its performance. Some material is incorporated by reference from other methods in this part. Therefore, to obtain reliable results, persons using this method should have a thorough knowledge of at least the following additional test methods: Method 1, Method 2, Method 3, Method 5, and Method 6. 1.0 Scope and Application. 1.1 Analytes. Analyte CAS No. Sensitivity Sulfuric acid, including: 0.05 mg/m3 Sulfuric acid 7664-93-9 (0.03 × 10-7 3 (H2SO4) mist 7449-11-9 lb/ft ) Sulfur trioxide (SO3) 3 Sulfur dioxide (SO2) 7449-09-5 1.2 mg/m (3 x 10-9 lb/ft3) 1.2 Applicability. This method is applicable for the determination of H2SO4 (including H2SO4 mist and SO3) and gaseous SO2 emissions from stationary sources. NOTE: Filterable particulate matter may be determined along with H2SO4 and SO2 (subject to the approval of the Administrator) by inserting a heated glass fiber filter 734 between the probe and isopropanol impinger (see Section 6.1.1 of Method 6). If this option is chosen, particulate analysis is gravimetric only; sulfuric acid is not determined separately. 1.3 Data Quality Objectives. Adherence to the requirements of this method will enhance the quality of the data obtained from air pollutant sampling methods. 2.0 Summary of Method. A gas sample is extracted isokinetically from the stack.
    [Show full text]
  • Treating Irrigation Systems with Chlorine 1
    Archival copy: for current recommendations see http://edis.ifas.ufl.edu or your local extension office. CIR1039 Treating Irrigation Systems with Chlorine 1 Kati W. Migliaccio, Brian Boman and Gary A. Clark2 Introduction Irrigation systems can become partially or completely clogged from biological growths of bacteria or algae which are often present in surface water and ground water. Bacteria and algae use chemical elements such as nitrogen, phosphorus, sulfur, or iron as nutrient sources to grow and develop (Figures 1 and 2) (Pitts et al., 2003). Thus, irrigation systems that also receive nutrients (such as natural background concentrations in the water or from fertigation) may experience greater rates of clogging. While all irrigation systems should have some Figure 1. Irrigation emitter clogged with algal growth. type of filtration system, this alone cannot effectively Credits: Brian Boman UF/IFAS remove microorganisms. Microorganism growth can result in clogged pipes, fittings, and emission devices of the chlorine chemical must be used to provide an (sprinklers, drippers, spray jets, etc.), decreasing effective water treatment program without damaging water application amounts and reducing application the irrigation system or the agricultural crop. uniformity and efficiency. The results of these are This publication provides a guide for using generally reduced agriculture productivity. A chlorine to treat inhibiting microorganism buildup in chemical method for removing microbial growth is irrigation systems. chlorination. Proper injection methods and amounts 1. This document is CIR1039, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date July 1992.
    [Show full text]
  • 186 SESSION LAWS [Chap
    186 SESSION LAWS [Chap. Sec. 2. This act shall take effect and be in force from and after its passage. Approved April 13, 1925. CHAPTER 187—S. F. No. 984. An act to safeguard the distribution and sale of certain danger- ous caustic or corrosive acids, alkalis, and other substances. Be it enacted by the Legislature of the State of Minnesota: Section 1. Definitions.—That in this act, unless the context or subject-matter otherwise requires, A. The term "dangerous caustic or corrosive substance" means each and all of the acids, alkalis, and substances named below: (a) Hydrochloric acid and any preparation containing free or chemi- cally unneutralized hydrochloric acid (HC1) in a concentration of ten per centum or more; (b) Sulphuric acid and any preparation containing free or chemically unneulralized sulphuric acid (H2SO4) in a concentration of ten per centum or more; (c) Nitric acid or any preparation containing free or chemically unneutralized nitric acid (HNO3) in a concentration of five per centum or more; (d) Carbolic acid (C6H5OH), otherwise known as phenol, and any preparation containing carbolic acid in a concentration of five per centum or more; (e) Oxalic acid and any preparation containing free or chemically unneutralized oxalic acid (H2C2O4) in a con- centration of ten per centum or more; (f) Any salt of oxalic acid and any preparation containing any such salt in a concentration of ten per centum or more; (g) Acetic acid or any preparation con- taining free or chemically unneutralized acetic acid (HC2H3O2) in a concentration of
    [Show full text]
  • The Determination of Sulfate and Sulfide Sulfur in Rocks Or Minerals
    The Determination of Sulfate and Sulfide Sulfur in Rocks or Minerals By ANGELINA C. VLISIDIS CONTRIBUTIONS TO GEOCHEMISTRY GEOLOGICAL SURVEY BULLETIN 1214-D UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 15 cents (paper cover) CONTENTS Page Abstract_____--__-___-_______-__---____,__-_-__-_---_-_______-_- Dl Introduction. ______________________________________________________ 1 Preparations. _________._.-.__-_-.__.._-_---__----.________._.._____ 2 Standard samples____________________________________________ 2 Reagents. _______________.-_-___-____-__-_-__-_-___-_______-_- 2 Procedure._______________________________________________________ 2 Results__ __________-______-_____----__--_--_----_-_-_-___-___--_ 3 References.._ _____________________________________________________ 5 TABLE Page TABLE 1. Results of sulfide and sulfate sulfur analyses in which varying amounts of a sulfate standard were added to sulfide minerals.. _ D4 m 209-517 66 CONTRIBUTIONS TO GEOCHEMISTRY THE DETERMINATION OF SULFATE AND SULFIDE SULFUR IN ROCKS OR MINERALS By ANGELINA C. VLISEDIS , ABSTRACT A method for the determination of sulfate and sulfide sulfur that occur together in rocks or minerals is presented. All the sulfate sulfur is converted to barium sulfate in an inert atmosphere to prevent oxidation of any sulfide sulfur. Cadmium chloride is added to precipitate any sulfide ion that may be liberated. The sulfate sulfur is then measured indirectly by the determination of the barium and is therefore unaffected by any. subsequent oxidation of the sulfide sulfur.
    [Show full text]
  • Nitration of Naphthalene and Remarks on the Mechanism of Electrophilic Aromatic Nitration* (Two-Step Mechanism) GEORGE A
    Proc. Nati. Acad. Sci. USA Vol. 78, No. 6, pp. 3298-3300, June 1981 Chemistry Nitration of naphthalene and remarks on the mechanism of electrophilic aromatic nitration* (two-step mechanism) GEORGE A. OLAH, SUBHASH C. NARANG, AND JUDITH A. OLAH Institute of Hydrocarbon Chemistry, Department of Chemistry, University of Southern California, Los Angeles, California 90007 Contributed by George A. Olah, March 2, 1981 ABSTRACT Naphthalene was nitrated with a variety of ni- Table 1. Nitration of naphthalene with various nitrating agents trating agents. Comparison of data with Perrin's electrochemical nitration [Perrin, C. L. (1977)J. Am. Chem. Soc. 99, 5516-5518] a/p shows that nitration of naphthalene gives an a-nitronaphthalene Temp, isomer to fi-nitronaphthalene ratio that varies between 9 and 29 and is Reagent Solvent OC ratio Ref. thus not constant. Perrin's data, therefore, are considered to be NO2BF4 Sulfolane 25 10 * inconclusive evidence for the proposed one-electron transfer NO2BF4 Nitromethane 25 12 mechanism for the nitration of naphthalene and other reactive HNO3 Nitromethane 25 29 1 aromatics. Moodie and Schoefield [Hoggett, J. G., Moodie, R. B., HNO3 Acetic acid 25 21 1 Penton, J. R. & Schoefield, K. (1971) Nitration andAromatic Reac- HNO3 Acetic acid 50 16 1 tivity (Cambridge Univ. Press, London)], as well as Perrin, in- HNO3 Sulfuric acid 70 22 1 dependently concluded that, in the general scheme of nitration of HNO3 Acetic 25 9 reactive aromatics, there is the necessity to introduce into the clas- anhydride sical Ingold mechanism an additional step involving a distinct in- CH30NOjCH3OSO2F Acetonitrile 25 13 * termediate preceding the formation ofthe Wheland intermediate AgNO3/CH3COCI Acetonitrile 25 12 * (o complexes).
    [Show full text]
  • Sulfur and Tennessee Row Crops
    W 435 SULFUR AND TENNESSEE ROW CROPS Sulfur (S) deficiencies have become more common in recent years. This publication outlines the importance and role of S in higher plants, summarizes recent research, and defines the University of Tennessee’s current S recommendations for row crops. Tyson B. Raper1, Angela T. McClure2, Frank Yin3 and Blake Brown4 1Assistant Professor, Cotton and Small Grains Specialist, Department of Plant Sciences 2Associate Professor, Corn and Soybean Specialist, Department of Plant Sciences 3Associate Professor, Cropping Systems Agronomist, Department of Plant Sciences 4Director, AgResearch and Education Center at Milan INTRODUCTION Sulfur (S) deficiencies have become more common in recent years due to a reduction in S deposition. Research at the University of Tennessee has begun to answer several key questions on crop response to applications of this nutrient. The objective of this publication is to outline the importance of S and the role it plays within higher plants, describe why the deficiencies are becoming more common, summarize recent research and define the University of Tennessee’s current S recommendations for Tennessee row crops. THE ROLE AND IMPORTANCE OF SULFUR IN HIGHER PLANTS Sulfur is an important nutrient in living systems; it is contained within four common amino acids that assist in the synthesis, structure and function of proteins (Brosnan & Brosnan, 2006). In plant nutrition, S is classified as a macronutrient since it is required in quantities much larger than most micronutrients. Within the macronutrient classification, S falls within the secondary nutrient subclassification along with calcium and magnesium. Although S isn’t a primary macronutrient, it is occasionally referred to as the fourth major nutrient (Stewart, 2010), and if contained within a fertilizer, the S percentage is commonly listed as the fourth Figure 1: Most S containing fertilizers have four number in the fertilizer analysis or grade numbers reported in the analysis or grade, with the first (Figure 1).
    [Show full text]
  • APPENDIX G Acid Dissociation Constants
    harxxxxx_App-G.qxd 3/8/10 1:34 PM Page AP11 APPENDIX G Acid Dissociation Constants §␮ ϭ 0.1 M 0 ؍ (Ionic strength (␮ † ‡ † Name Structure* pKa Ka pKa ϫ Ϫ5 Acetic acid CH3CO2H 4.756 1.75 10 4.56 (ethanoic acid) N ϩ H3 ϫ Ϫ3 Alanine CHCH3 2.344 (CO2H) 4.53 10 2.33 ϫ Ϫ10 9.868 (NH3) 1.36 10 9.71 CO2H ϩ Ϫ5 Aminobenzene NH3 4.601 2.51 ϫ 10 4.64 (aniline) ϪO SNϩ Ϫ4 4-Aminobenzenesulfonic acid 3 H3 3.232 5.86 ϫ 10 3.01 (sulfanilic acid) ϩ NH3 ϫ Ϫ3 2-Aminobenzoic acid 2.08 (CO2H) 8.3 10 2.01 ϫ Ϫ5 (anthranilic acid) 4.96 (NH3) 1.10 10 4.78 CO2H ϩ 2-Aminoethanethiol HSCH2CH2NH3 —— 8.21 (SH) (2-mercaptoethylamine) —— 10.73 (NH3) ϩ ϫ Ϫ10 2-Aminoethanol HOCH2CH2NH3 9.498 3.18 10 9.52 (ethanolamine) O H ϫ Ϫ5 4.70 (NH3) (20°) 2.0 10 4.74 2-Aminophenol Ϫ 9.97 (OH) (20°) 1.05 ϫ 10 10 9.87 ϩ NH3 ϩ ϫ Ϫ10 Ammonia NH4 9.245 5.69 10 9.26 N ϩ H3 N ϩ H2 ϫ Ϫ2 1.823 (CO2H) 1.50 10 2.03 CHCH CH CH NHC ϫ Ϫ9 Arginine 2 2 2 8.991 (NH3) 1.02 10 9.00 NH —— (NH2) —— (12.1) CO2H 2 O Ϫ 2.24 5.8 ϫ 10 3 2.15 Ϫ Arsenic acid HO As OH 6.96 1.10 ϫ 10 7 6.65 Ϫ (hydrogen arsenate) (11.50) 3.2 ϫ 10 12 (11.18) OH ϫ Ϫ10 Arsenious acid As(OH)3 9.29 5.1 10 9.14 (hydrogen arsenite) N ϩ O H3 Asparagine CHCH2CNH2 —— —— 2.16 (CO2H) —— —— 8.73 (NH3) CO2H *Each acid is written in its protonated form.
    [Show full text]
  • Introduction to Chemistry
    Introduction to Chemistry Author: Tracy Poulsen Digital Proofer Supported by CK-12 Foundation CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook Introduction to Chem... materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based Authored by Tracy Poulsen collaborative model termed the “FlexBook,” CK-12 intends to pioneer the generation and 8.5" x 11.0" (21.59 x 27.94 cm) distribution of high-quality educational content that will serve both as core text as well as provide Black & White on White paper an adaptive environment for learning. 250 pages ISBN-13: 9781478298601 Copyright © 2010, CK-12 Foundation, www.ck12.org ISBN-10: 147829860X Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made Please carefully review your Digital Proof download for formatting, available to Users in accordance with the Creative Commons Attribution/Non-Commercial/Share grammar, and design issues that may need to be corrected. Alike 3.0 Unported (CC-by-NC-SA) License (http://creativecommons.org/licenses/by-nc- sa/3.0/), as amended and updated by Creative Commons from time to time (the “CC License”), We recommend that you review your book three times, with each time focusing on a different aspect. which is incorporated herein by this reference. Specific details can be found at http://about.ck12.org/terms. Check the format, including headers, footers, page 1 numbers, spacing, table of contents, and index. 2 Review any images or graphics and captions if applicable.
    [Show full text]
  • Dissociation Constants and Ph-Titration Curves at Constant Ionic Strength from Electrometric Titrations in Cells Without Liquid
    U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS RESEARCH PAPER RP1537 Part of Journal of Research of the N.ational Bureau of Standards, Volume 30, May 1943 DISSOCIATION CONSTANTS AND pH-TITRATION CURVES AT CONSTANT IONIC STRENGTH FROM ELECTRO­ METRIC TITRATIONS IN CELLS WITHOUT LIQUID JUNCTION : TITRATIONS OF FORMIC ACID AND ACETIC ACID By Roger G. Bates, Gerda L. Siegel, and S. F. Acree ABSTRACT An improved method for obtaining the titration curves of monobasic acids is outlined. The sample, 0.005 mole of the sodium salt of the weak acid, is dissolver! in 100 ml of a 0.05-m solution of sodium chloride and titrated electrometrically with an acid-salt mixture in a hydrogen-silver-chloride cell without liquid junction. The acid-salt mixture has the composition: nitric acid, 0.1 m; pot assium nitrate, 0.05 m; sodium chloride, 0.05 m. The titration therefore is performed in a. medium of constant chloride concentration and of practically unchanging ionic­ strength (1'=0.1) . The calculations of pH values and of dissociation constants from the emf values are outlined. The tit ration curves and dissociation constants of formic acid and of acetic acid at 25 0 C were obtained by this method. The pK values (negative logarithms of the dissociation constants) were found to be 3.742 and 4. 754, respectively. CONTENTS Page I . Tntroduction __ _____ ~ __ _______ . ______ __ ______ ____ ________________ 347 II. Discussion of the titrat ion metbod __ __ ___ ______ _______ ______ ______ _ 348 1. Ti t;at~on. clU,:es at constant ionic strength from cells without ltqUld JunctlOlL - - - _ - __ _ - __ __ ____ ____ _____ __ _____ ____ __ _ 349 2.
    [Show full text]
  • N-BUTYL ALCOHOL
    Right to Know Hazardous Substance Fact Sheet Common Name: n-BUTYL ALCOHOL Synonyms: Propyl Carbinol; n-Butanol CAS Number: 71-36-3 Chemical Name: 1-Butanol RTK Substance Number: 1330 Date: November 1998 Revision: January 2008 DOT Number: UN 1120 Description and Use EMERGENCY RESPONDERS >>>> SEE BACK PAGE n-Butyl Alcohol is a colorless liquid with a strong, sweet Hazard Summary alcohol odor. It is used as a solvent for fats, waxes, shellacs, Hazard Rating NJDOH NFPA resins, gums, and varnish, in making hydraulic fluids, and in HEALTH - 2 medications for animals. FLAMMABILITY - 3 REACTIVITY - 0 f ODOR THRESHOLD = 1 to 15 ppm FLAMMABLE f Odor thresholds vary greatly. Do not rely on odor alone to POISONOUS GASES ARE PRODUCED IN FIRE determine potentially hazardous exposures. CONTAINERS MAY EXPLODE IN FIRE Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious; Reasons for Citation 4=severe f n-Butyl Alcohol is on the Right to Know Hazardous f n-Butyl Alcohol can affect you when inhaled and by Substance List because it is cited by OSHA, ACGIH, DOT, passing through the skin. NIOSH, DEP, IRIS, NFPA and EPA. f Contact can irritate and burn the skin. f This chemical is on the Special Health Hazard Substance f n-Butyl Alcohol can irritate and burn the eyes with possible List. eye damage. f Inhaling n-Butyl Alcohol can irritate the nose, throat and lungs. f Exposure to n-Butyl Alcohol can cause headache, dizziness, nausea and vomiting. SEE GLOSSARY ON PAGE 5. f n-Butyl Alcohol can damage the liver, kidneys, hearing, and sense of balance.
    [Show full text]
  • N-Hexyl-Chloroformate-NHEXCF.Pdf
    Date of issue: 11. 02. 2004. Date of revision: 15.01.2015. Version: CLP_ C msds-europe.com SAFETY DATA SHEET SECTION 1 : IDENTIFICATION OF THE SUBSTANCE AND OF THE COMPANY/UNDERTAKING 1.1. Product identifier: HEXYL CHLOROFORMATE Synonym: Chloroformic Acid Hexyl Ester CAS number: 6092-54-2 EU number: 228-036-4 Index number: 607-064-00-4 Registration number: Registration number is not available for this substance since this substance or its use is exempted from registration based on Article 2 of REACH regulation, or registration is not necessary due to the annual tonnage band, or the registration is scheduled to a later registration date. 1.2. Relevant identified uses of the substance and uses advised against: Organic synthesis intermediate for industrial use. 1.3. Details of the supplier of the safety data sheet: FRAMOCHEM FRENCH-HUNGARIAN FINE CHEMICALS LTD. 3700 Kazincbarcika, Szerviz str. 5., POB. 504 Telephone: +36 (48) 311-991 Fax: +36 (48) 512-162 1.3.1. Responsible person: - E-mail: [email protected] 1.4. Emergency telephone number: Public Toxicological Health Service (ETTSZ) 1096 Budapest, Nagyvárad tér 2. Tel.: 06 1 476 6464, 06 80 201 199 (0-24 h) SECTION 2: HAZARDS IDENTIFICATION 2.1. Classification of the substance: Classification according to Regulation 1272/2008/EC (CLP): Acute Tox (oral) 3 – H301 Acute Tox. 3 (dermal) – H311 Skin Corr. 1B – H314 Acute Tox. (inhalative) – H331 Warning H statements: H301 – Toxic if swallowed. H311 – Toxic in contact with skin. H314 – Causes severe skin burns and eye damage. H331 – Toxic if inhaled. Classification according to Directive 67/548/EEC: T; Toxic – R 23/24/25 C; Corrosive – R34 R phrases referring to the hazards/risks: FRAMOCHEM FRENCH-HUNGARIAN FINE CHEMICALS LTD.
    [Show full text]