Attachment A
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Optrel-Filter-Guide.Pdf
Guide to optrel filters This information is intended to provide an overview of the relevant factors that will help in the selection of a suitable fil- ter. If you lack the necessary information and/or are not sure about your choice, consult a professional first. Only with the right choice you can protect yourself from the health risks caused by pollutants in the ambient air. 1. information you need for a correct choose: • Pollutants in the ambient air • Concentration(s) of the pollutant(s) • Aggregate state(s) of the pollutant(s) (gaseous, solid, as a mixture) • Can the pollutants be detected without aids? (e.g. odor or taste) • The valid limit values e.g. AGW, OEL, ... • Oxygen content of the ambient air. There are locally different minimum concentrations apply (Germany at least 17 vol. %) • Should respiratory protection be combined with other be combined? (head, eye or hearing protection) 3. selection of the suitable filter device With the information from chapter 2, the necessary protection factor can be determined. The following chart shows the protection factor of the optrel respiratory protection equipment is listed: 2 optrel Filter Guide Device Marking Nominal protection factor Particle filtering devices e3000X in combination with TH3P 500 PAPR helmet panoramaxx se- ries, sphere series, clearmaxx series swiss air TH3P 500 e3000X in combination with TH2P 50 PAPR clearmaxx und industri- al hard hat e3000X in combination with TH1P 10 PAPR panoramaxx series and industrial hard hat Chart 1 with protection factors of optrel equipment (Germany) The NPF is derived from the maximum permissible leakage of the respective equipment. -
Proposed 15-Day Modifications
INFORMAL PRELIMINARY REVIEW DRAFT Proposed 15-Day Modifications ATTACHMENT A PROPOSED 15-DAY MODIFICATIONS California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Article 1 Note: This document shows proposed modifications to the originally proposed amendments to the Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants, as presented during the November 19, 2020, meeting of the California Air Resources Board. At that meeting, the Board directed staff to make modifications to the proposed amendments based on public comments received, and to provide these updates for public comment for a period of at least 15 days. The pre-existing regulation text is set forth below in normal type. The original proposed amendments are shown in underline formatting to indicate additions and strikeout to indicate deletions. The additional proposed modifications made available with the notice of public availability of modified text dated March XY, 2021, are shown in double- underline to indicate additions and double-strikeout to indicate deletions. The symbol “***” means that intervening text not proposed for amendment is not shown. PROPOSED AMENDMENTS TO THE REGULATION FOR THE REPORTING OF CRITERIA AIR POLLUTANTS AND TOXIC AIR CONTAMINANTS California Code of Regulations, Title 17, Division 3, Chapter 1, Subchapter 7.7, Articles 1 and 2 Amend Subchapter 7.7, Article 1, and sections 93400, 93401, 93402, 93403, 93404, 93405, 93406, 93407, 93408, 93409, 93410, title 17, California Code of Regulations, and adopt new Subchapter 7.7, Article 2, sections 93420, 93421, and new Subchapter 7.7, Article 2, Appendices A and B to title 17, California Code of Regulations, to read as follows: CARB / AQPSD 1 2/11/2021 INFORMAL PRELIMINARY REVIEW DRAFT Proposed 15-Day Modifications Subchapter 7.7: Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants Article 1. -
Dispensing Solutions for Cyanoacrylate Adhesives White
Dispensing Solutions for Cyanoacrylate Adhesives Contents How Cyanoacrylates Work .......................................................................3 Advantages of CAs ...................................................................................4 CA Dispensing Challenges .......................................................................4 Best Practices for Dispensing CAs .....................................................5-12 Best Systems for Dispensing CAs ....................................................13-14 Useful Resources ...................................................................................15 Introduction Cyanoacrylate adhesives, also known as CAs or cyanos, are highly effective at bonding many types of materials together in assembly processes. Often referred to as super glues, they exhibit high bond strength and fast cure times that help manufacturers speed production processes for higher throughput yields. This makes them an ideal choice for assembling products in a variety of industries, including automotive, electronics, life sciences, defense, and consumer goods. Though beneficial, these moisture-cure adhesives can be a challenge, especially when your assembly process requires precise, repeatable dispensing. This paper outlines proper handling methods and dispensing solutions for successful CA dispensing. Find out how to minimize material waste by more than 60% while also minimizing operator exposure to the adhesive. Speed your production processes while producing higher quality parts with -
The Pennsylvania State University the Graduate School College Of
The Pennsylvania State University The Graduate School College of Engineering NOVEL TEMPLATE-LESS SYNTHESIS OF POLYCYANOACRYLATE NANOFIBERS A Thesis in Chemical Engineering by Pratik Mankidy 2007 Pratik Mankidy Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy December 2007 The thesis of Pratik Mankidy was reviewed and approved* by the following: Henry C. Foley Professor of Chemical Engineering Thesis Advisor Chair of Committee Carlo G. Pantano Distinguished Professor of Materials Science and Engineering Janna K. Maranas Associate Professor of Chemical Engineering Andrew L. Zydney Walter L. Robb Chair Professor of Chemical Engineering Head of the Department of Chemical Engineering *Signatures are on file in the Graduate School iii ABSTRACT Polymer nanofibers are 1D nanostructures that are gathering significant interest because of their potential applications in a wide variety of fields such as biomedicine, separation, electronics and sensor materials. They are also fascinating structures because in some cases they posses unique properties arising from the preferential arrangement of the polymer chains parallel to the fibers axes. Challenges that synthesis techniques for polymer nanofibers face are scalability and control during fabrication. An alternate to current common approaches such as electrospinning and templated-synthesis of polymer nanofibers, is template-less synthesis of polymer nanofibers during polymerization. This approach offers the advantage of bottom-up fabrication and the potential for large scale synthesis. Herein results from an investigation using this approach for poly (ethyl 2- cyanoacrylate) [PECA] nanofiber formation are reported. The template-less growth of PECA nanofibers is first demonstrated using the initiators present in human fingerprint residue via vapor phase polymerization of the monomer under conditions of high humidity. -
Thermodynamics and Reaction Mechanism of Urea Decomposition† Cite This: Phys
PCCP View Article Online PAPER View Journal | View Issue Thermodynamics and reaction mechanism of urea decomposition† Cite this: Phys. Chem. Chem. Phys., 2019, 21,16785 a b b b Steffen Tischer, * Marion Bo¨rnhorst, Jonas Amsler, Gu¨nter Schoch and Olaf Deutschmann ab The selective catalytic reduction technique for automotive applications depends on ammonia production from a urea–water solution via thermolysis and hydrolysis. In this process, undesired liquid and solid by-products are formed in the exhaust pipe. The formation and decomposition of these Received 18th March 2019, by-products have been studied by thermogravimetric analysis and differential scanning calorimetry. Accepted 5th July 2019 A new reaction scheme is proposed that emphasizes the role of thermodynamic equilibrium of the DOI: 10.1039/c9cp01529a reactants in liquid and solid phases. Thermodynamic data for triuret have been refined. The observed phenomenon of liquefaction and re-solidification of biuret in the temperature range of 193–230 1Cis rsc.li/pccp explained by formation of a eutectic mixture with urea. Creative Commons Attribution-NonCommercial 3.0 Unported Licence. 1 Introduction and ammonium ISE (ion-selective electrode) measurements. Concluding from experimental results and literature data, 23 Air pollution by nitrogen oxides from Diesel engines is a major possible reactions including urea and its by-products biuret, problem concerning the environment and society. Therefore, cyanuric acid, ammelide, ammeline and melamine are presented. governments follow the need to regulate emissions by law (e.g., Further, cyanate and cyanurate salts and cyanamide are 715/2007/EG, ‘‘Euro 5 and Euro 6’’).1 The favored method to proposed as possible intermediates of high temperature urea reduce nitrogen oxides is selective catalytic reduction (SCR) decomposition. -
United States Patent Office E
Unitede States- Patent- Office 3,845,059E. 1. 2 The reaction of biuret with diethanolamine to form PREPARATION OF N,N'-DIETHANOL3,845,059 PIPERAZINE N,N'-diethanol piperazine can be illustrated as follows: Alvin F. Beale, Jr., Lake Jackson, Tex., assignor to The Dow Chemical Company, Midland, Mich. 2(HOCH)NH -- NH2CONHCONH --> No Drawing. Filed June 19, 1972, Ser. No. 264,704 5 CHO Int, C. C07d51/70 U.S. C. 260-268. SY 8 Claims /N al-woman-mamm CH, CH, ABSTRACT OF THE DISCLOSURE + 2CO. 1 + 8NHat Diethanolamine is reacted with urea or a urea pyrol- lo Y yzate (e.g. biuret, triuret, or cyanuric acid) to form N,N'-diethanol piperazine. The following chart illustrates the balanced stoichiom BACKGROUND OF THE INVENTION la etry for reacting diethanolamine with urea, biuret, triuret, N,N'-diethanol piperazine has been previously prepared and cyanuric acid. Reaction products Moles of Empirical Moles N,N'- Moles of formula of of diethanol Moles Moles (HOCH)NH Name of reactant reactant reactant piperazine of Co2 of NH3 2---------------------- Urea------------------------ CHNO 2 2 4. 2- ---. Biuret---. C2HNO2 2 3 6-- --- Triuret.----- ... C3HNO3 2 3. 6 8 6.----- ... Cyanuric aci - C3H3NO3 2 3. 6 6 by the condensation of piperazine with ethylene chloro- The reaction has been found to be specific for dieth hydrin as reported in J. Am. Chem. Soc., Vol. 55, p. 3823 anolamine since analogous dialkanolamines do not give (1933). The compound has been reported to have phar- corresponding dialkanol-substituted cyclic structures con macological properties as an anesthetic or sedative in 30 taining nitrogens within a carbon ring. -
Ergo.® Instant Adhesives Fast-Bonding All-Rounders Fast, Secure, Universal
ergo.® instant adhesives Fast-bonding all-rounders Fast, secure, universal Joining what belongs together, and essentially doing it independently of the substrate material: ergo.® instance adhesives achieve excellent bonding results in practically every industry, as well as for repairs and maintenance. They are even used on difficult-to-bond materials, forming high-strength bonds that are resistant to aging. ergo.® instant adhesives ensure an effortless bonding Instructions for using performance on metals, plastics, elastomers, wood, ergo.® instant adhesives plaster, stone, ceramics and many other substrates. These solvent-free, extremely fast-curing one- Cleaning – For optimum bond strength, bonded surfaces component products can be used in a wide range must be free of oil, grease and other contami- of applications, even under difficult conditions. nants. We recommend ergo.® 9195 Cleaner to prepare plastics and ergo.® 9190 Cleaner to The former instant adhesives – which were first prepare metals. developed in the 1950s – cannot be compared – Where feasible, prepare surfaces by with the products made today. These have been mechanical abrasion (sanding, grinding, systematically improved and designed to meet sandblasting, etc.). – Clean prior to mechanical treatment and new requirements. after again. In short, ergo.® fast-curing adhesives are impact- – With elastomers, freshly cut surfaces must be bonded. Remove any plasticizers or traces resistant, flexible, temperature resistant, unaffected of talc. by variations in temperature or moisture, depending Dispensing on your requirements. – Apply the adhesive to one side of the substrate (drops or continuous bead). – This can be done by applying the product Advantages directly from the original packaging or using dosage dispensers, such as dispensing tips + one-component, easy to use or dosing systems. -
Asian Journal of Chemistry Asian Journal of Chemistry
Asian Journal of Chemistry; Vol. 27, No. 9 (2015), 3149-3151 ASIAN JOURNAL OF CHEMISTRY http://dx.doi.org/10.14233/ajchem.2015.16726 Synthesis and Antimicrobial Activities of 2-S-Hepta-O-benzoyl lactosyl-1-aryl-5-hepta-O-benzoyl-β-lactosyl-2-isothiobiurets * REENA J. DESHMUKH and SHIRISH P. D ESHMUKH P.G. Department of Chemistry, Shri Shivaji College, Akola-444 001, India *Corresponding author: E-mail: [email protected] Received: 20 April 2014; Accepted: 14 March 2015; Published online: 26 May 2015; AJC-17213 A series of novel 2-S-hepta-O-benzoyl lactosyl-1-aryl-5-hepta-O-benzoyl-β-lactosyl-2-isothiobiurets have been synthesized by the interaction of S-hepta-O-benzoyl lactosyl-1-arylisothiocarbamides and hepta-O-benzoyl-β-D-lactosyl isocyanate. These compounds were screened for their antibacterial and antifungal activities against Escherichia coli, Proteus vulgaris, Salmonella typhimurium, Staphylococcus aureus, Pseudomonas aeruginosa and Aspergillus niger. The newly synthesized compounds have been characterized by analytical and IR, 1H NMR and mass spectral studies. Keywords: Arylisothiocarbamides, Lactosyl thiocyanate, Isothiobiurets. INTRODUCTION an efficient synthetic route to novel lactosyl isothiourea derivatives and their antimicrobial activities are reported. A number of thiourea derivatives have been reported to 1 2 exhibit antibacterial , herbicidal and fungicidal activities. EXPERIMENTAL Sugar thioureas3 has synthetic applications in neoglycocon- jugate synthetic strategies4, including neoglycoproteins5, Melting points determined are uncorrected. IR Spectra glycodendrimers6, glycoclusters7 and pseudooligosaccharides8. were recorded on Perkin-Elmer spectrum RXI FTIR spectro- Thiobiurets (mono and di) are also important derivatives meter. 1H NMR was obtained on Bruker DRX-300 MHz NMR of (thio) urea which may increase the biological activity of Spectrometer. -
Nomination Background: Ethyl Cyanoacrylate (CASRN: 7085-85-0)
i' ETHYL CYANOACRYLATE CAS Number: 7085-85-0 NTP Nomination History and Review NCI summary of·oata for Chemical Selection Ethyl cyanoacrylate 7085-85-0 NTP NOMINATION HISTORY AND REVIEW A. Nomination History 1. Source: National Cancer Institute 2. Reco~endation: -Carcinogenicity (Inhalation) -Neurotoxicity -Reproductive and developmental effects 3. Rationale/Remarks: -Widespread use as a consumer instant adhesive -Lack of toxicity data -Potential biological activity 4. Priority: High 5. Date of Nomination: 5/91 B. Chemical Evaluation Committee Review 1. Date of Review: 2. Recommendations: 3. Priority: 4. NTP Chemical Selection Principles: 5. Rationale/Remarks: c. Board of Scientific Counselors Review 1. Date of Review: 2. Recommendations: 3. Priority: 4. Rationale/Remarks: D. Executive Committee Review 1. Date of Review: 2. Decision: . \ ,. 7085-85-0 Ethyl cyanoacrylate SUMMARY OF DATA FOR CHEMICAL SELECTION CHEMICAL IDENTIFICATION CAS Registry Number: 7085-85-0 Chern. Abstr. Name: 2-Cyano-2-propenoic acid, ethyl ester Synonyms & Trade Names: 910EM; ACE-EE; ACE-E SO; acrylic acid, 2-cyano-, ethyl ester; adhesive 502; Aron Alpha D; Black Max; CA 3; CA 3 (adhesive); CA 8-3A; CN 2; CN 4; Cemedine 3000RP; Cemedine 3000RP Type-II; Cemedine 3000RS; Cemedine 3000RS Type-11; Cyanobond W 100; Cyanobond W 300; Cyanolite 20 1; Cyan on 5MSP; DA 737S; ethyl Q-cyanoacrylate; ethyl 2-cyanoacrylate; Krazy Glue; N 135; Permabond 105; Permabond 200; Permabond 268; Pro Grip 4000; PTR-E 3; PTR-E 40; Super 3-1000; Superbonder 420; Super Glue; TK. 200; TK 201 Structure. Molecular Formula and Molecular Weight Mol. wt.: 125.13 Chemical and Physical Properties [From Coover eta/. -
Spray Foam Event 2013, Session a Presentations Contents List
Spray Foam Event 2013, Session A Presentations Contents List 1. Introduction to Spray Polyurethane Foam (Click to go to PDF Page 2) 2. OSHA’s Isocyanates National Emphasis Program (Click to go to PDF Page 58) 3. EOLWD On-site Consultation Program (Click to go to PDF Page 76) 4. Essential Resources and Training, American Chemistry Council (Click to go to PDF Page 109) 5. Safe Spray Foam (Click to go to PDF Page 126) 6. EPA Safe Use of Polyurethane Products (Click to go to PDF Page 137) Return to Contents List Introduction to Spray Polyurethane Foam This presentation will provide important background information on SPF, including history, product categories and delivery methods and applications. It will also address chemical concerns and include tips for a quality installation, and briefly cover environmental impacts of the product COPYRIGHTED MATERIALS This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of any part of this presentation without written permission of the speaker is prohibited. © 2013 Spray Polyurethane Foam Alliance Presentation Content 1. History 2. Product Categories 3. Basic Chemistry 4. Delivery Methods 5. Chemical Concerns 6. Environmental Impact 7. Quality Installation 8. Summary History of SPF in Buildings in construction for 50 years • Late 60’s ‐ Medium Density (agricultural and industrial) • Mid 70’s ‐Roofing ‐ Medium Density (general const.) ‐ Sealants • Mid 90’s ‐ Low Density (residential) Product Category Four general categories of SPF Spray Foam -
Biuret Applications in Beef and Dairy Rations
The Technical Edge Biuret has Practical Applications in Beef and Dairy Rations Feed grade biuret, an economical source of non-protein nitro- gen (NPN), is an ADM Alliance Nutrition® exclusive. It can be Table 1 Nutrient Composition of Biuret used in ruminant diets and is approved for use in dairy lactation Item % AF % DM diets. Prior to May 2003, biuret was not approved for use in dairy DM, % 99 — rations. ADM was instrumental in getting biuret approved for use in dairy rations. Numerous research articles were reviewed and Protein, % 246 248.5 summarized. On May 27, 2003, ADM received an approval letter RDP, % CP 100 100 from the Food and Drug Administration (FDA) allowing biuret to 1 be formulated into dairy rations. SIP , % CP 100 100 Biuret is formed by the controlled decomposition of urea, con- NPN, % SIP 100 100 densing two molecules of urea into a single molecule of biuret, NRC, 2001 A Protein, % CP 100 100 which retains three of the nitrogen atoms (see Figure 1). Feed- 1 grade biuret is a mixture containing biuret and urea (maximum of For use in formulation; biuret is slowly soluble. 14%) with small amounts of triuret and cyanuric acid. Typically, biuret contains a minimum of 35% nitrogen with a crude protein fed in confinement. The slower degradation and physical proper- value of 246% (See Table 1). ties assist in forming a high-quality, self-fed supplement. Biuret Biuret is less soluble than urea. The combination of structural is at least 7.3 times less toxic than urea, making it ideal when and physical characteristics slows the rumen digestion of biuret. -
Permabond ® 910Fs
PERMABOND ®9 10FS Methyl Cyanoacrylate Ref. #: 041509PB910FS FEATURES & BENEFITS TYPICAL APPLICATIONS Fast setting and fixturing of parts Metal bonding Rapid development at high strength Sensitive plastic parts Ease of uses ingle part no mixing Name plates Excellent adhesion to metal surface Or ings Parts before riveting or welding GENERAL DESCRIPTION PERMABOND 910FS is the original 100%m ethyl cyanoacrylate adhesive. It is a single part, low viscosity liquid that will cure rapidly at room temperature when pressed into a thin film between parts. PERMABOND 910FS will cure to a fixture strength in 5 seconds on most surfaces, and rapidly develops high strength with full cure obtained in 4 hours. The adhesive was designed specifically for the bonding of metal surfaces, and provides excellent bond strength to steel, aluminum, and most metal surfaces. The methyl cyanoacrylate will also adhere well to a wide variety of other materials including most plastics and rubbers. PERMABOND 910FS has been formulated to be less aggressive to sensitive plastic surfaces such as Styrofoam, polycarbonate and ABS. The cured adhesive is an inert plastic that is resistant to most chemicals. The cured 910 adhesive will also have a greater resistance to high temperatures than most conventional ethyl cyanoacrylate adhesives. PHYSICAL PROPERTIES OF THE UNCURED ADHESIVE Chemical Type Methyl Color Colorless Viscosity, cP @ 25C 3 Specific Gravity 1.09 Flash point, °C (°F) 83 (181) Shelf Life stored at 2°C – 7°C (35°F – 45°F), months 12 Maximum gap fill; in (mm) .002 (0.05) Non Warranty: The information given and the recommendations made herein are based on our research and are believed to be accurate but no guarantee of their accuracy is made.