OLCT200 PID Application Note
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Bromomethane CAS #: 74-83-9 Revised By: RRD Toxicology Unit Revision Date: August 14, 2015
CHEMICAL UPDATE WORKSHEET Chemical Name: Bromomethane CAS #: 74-83-9 Revised By: RRD Toxicology Unit Revision Date: August 14, 2015 (A) Chemical-Physical Properties Part 201 Value Updated Value Reference Source Comments Molecular Weight (g/mol) 94.94 94.94 EPI EXP Physical State at ambient temp Liquid Gas MDEQ Melting Point (˚C) 179 -93.70 EPI EXP Boiling Point (˚C) 3.5 3.50 EPI EXP Solubility (ug/L) 1.45E+7 1.52E+07 EPI EXP Vapor Pressure (mmHg at 25˚C) 1672 1.62E+03 EPI EXP HLC (atm-m³/mol at 25˚C) 1.42E-2 7.34E-03 EPI EXP Log Kow (log P; octanol-water) 1.18 1.19 EPI EXP Koc (organic carbon; L/Kg) 14.5 13.22 EPI EST Ionizing Koc (L/kg) NR NA NA Diffusivity in Air (Di; cm2/s) 0.08 1.00E-01 W9 EST Diffusivity in Water (Dw; cm2/s) 8.0E-6 1.3468E-05 W9 EST CHEMICAL UPDATE WORKSHEET Bromomethane (74-83-9) Part 201 Value Updated Value Reference Source Comments Soil Water Partition Coefficient NR NR NA NA (Kd; inorganics) Flash Point (˚C) NA 194 PC EXP Lower Explosivity Level (LEL; 0.1 0.1 CRC EXP unit less) Critical Temperature (K) 467.00 EPA2004 EXP Enthalpy of Vaporization 5.71E+03 EPA2004 EXP (cal/mol) Density (g/mL, g/cm3) 1.6755 CRC EXP EMSOFT Flux Residential 2 m 2.69E-05 2.80E-05 EMSOFT EST (mg/day/cm2) EMSOFT Flux Residential 5 m 6.53E-05 6.86E-05 EMSOFT EST (mg/day/cm2) EMSOFT Flux Nonresidential 2 m 3.83E-05 4.47E-05 EMSOFT EST (mg/day/cm2) EMSOFT Flux Nonresidential 5 m 9.24E-05 1.09E-04 EMSOFT EST (mg/day/cm2) 2 CHEMICAL UPDATE WORKSHEET Bromomethane (74-83-9) (B) Toxicity Values/Benchmarks Source/Reference/ Comments/Notes Part 201 Value Updated Value Date /Issues Reference Dose 1.4E-3 2.0E-2 OPP, 2013 (RfD) (mg/kg/day) Rat subchronic Tier 1 Source: Complete gavage study EPA-OPP: (Danse et al., Basis: OPP is the more current than IRIS, PPRTV and ATSDR. -
SAFETY DATA SHEET Bromomethane (R40 B1) SECTION 1
SAFETY DATA SHEET Bromomethane (R40 B1) Issue Date: 16.01.2013 Version: 1.0 SDS No.: 000010021848 Last revised date: 02.02.2017 1/17 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1 Product identifier Product name: Bromomethane (R40 B1) Additional identification Chemical name: Bromomethane Chemical formula: CH3Br INDEX No. 602-002-00-2 CAS-No. 74-83-9 EC No. 200-813-2 REACH Registration No. Not available. 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses: Industrial and professional. Perform risk assessment prior to use. Using gas alone or in mixtures for the calibration of analysis equipment. Using gas as feedstock in chemical processes. Formulation of mixtures with gas in pressure receptacles. Uses advised against Consumer use. 1.3 Details of the supplier of the safety data sheet Supplier Linde Gas GmbH Telephone: +43 50 4273 Carl-von-Linde-Platz 1 A-4651 Stadl-Paura E-mail: [email protected] 1.4 Emergency telephone number: Emergency number Linde: + 43 50 4273 (during business hours), Poisoning Information Center: +43 1 406 43 43 SDS_AT - 000010021848 SAFETY DATA SHEET Bromomethane (R40 B1) Issue Date: 16.01.2013 Version: 1.0 SDS No.: 000010021848 Last revised date: 02.02.2017 2/17 SECTION 2: Hazards identification 2.1 Classification of the substance or mixture Classification according to Directive 67/548/EEC or 1999/45/EC as amended. T; R23/25 Xi; R36/37/38 Xn; R48/20 Muta. 3; R68 N; R50 N; R59 The full text for all R-phrases is displayed in section 16. -
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. -
A Comprehensive Investigation on the Formation of Organo-Sulfur Molecules in Dark Clouds Via Neutral-Neutral Reactions
A&A 395, 1031–1044 (2002) Astronomy DOI: 10.1051/0004-6361:20021328 & c ESO 2002 Astrophysics A comprehensive investigation on the formation of organo-sulfur molecules in dark clouds via neutral-neutral reactions M. Yamada1, Y. Osamura1, and R. I. Kaiser2;? 1 Department of Chemistry, Rikkyo University, 3-34-1 Nishi-ikebukuro, Tokyo 171-8501, Japan 2 Department of Chemistry, University of York, YO10 5DD, UK Received 11 June 2002 / Accepted 9 September 2002 Abstract. Fifteen reactions on the doublet HCnS and singlet/triplet H2CnS(n = 1; 2) potential energy surfaces have been investi- gated theoretically via electronic structure calculations to unravel the formation of hydrogen deficient, sulfur bearing molecules via bimolecular reactions of two neutral species in cold molecular clouds. Various barrierless reaction pathways to synthe- size astronomically observed CnS and hitherto undetected HCnS(n = 1; 2) isomers are offered. These data present important 2 2 guidance to search for rotational transitions of the elusive thioformyl HCS(X A0) and thioketenyl HCCS(X Π) radicals in the interstellar medium. Key words. astrochemistry – ISM: molecules – molecular processes – methods: miscellaneous 1. Introduction terminated counterparts HCnSandCnSH have not been de- tected in the interstellar medium yet. However, these molecules Untangling the synthetic routes to form sulfur-carrying might represent the missing source of molecular-bound sul- molecules in the interstellar medium is a significant instru- fur in the interstellar medium. Hydrogen deficient organosul- ment to understand the chemical evolution and physical con- 2 2 fur molecules like HCS(X A0) and HCCS(X Π) resemble also ditions in star forming regions and in circumstellar envelopes important reaction intermediates which could lead to sulfur (Minh & van Dishoeck 2000). -
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. -
Effect of Rutin on Gentamicin-Induced Ototoxicity in Rats: a Biochemical and Histopathological Examination
ORIGINAL ARTICLE ENT UPDATES 11(1):8-13 DOI: 10.5152/entupdates.2021.887158 Effect of Rutin on Gentamicin-Induced Ototoxicity in Rats: A Biochemical and Histopathological Examination Abstract Objective: Gentamicin is a broad-spectrum aminoglycoside antibiotic administered parenterally for moderate to severe gram-negative infections. Ototoxicity is an im- portant side effect that limits gentamicin use. The aim of this study is to investigate the effect of rutin on gentamicin-induced ototoxicity in rats biochemically and histo- pathologically. Methods: Distilled water was administered by oral gavage to healthy controls (HG) and cobalt administered group (GC). 50 mg/kg rutin was administered by oral gavage to rutin + gentamicin (RGG) group. After one hour, 100 mg/kg gentamicin was injected intraperitoneally (i.p) to the RGG and GC animal groups. This procedure was repeated once a day for 14 days. Results: Malondialdehyde (MDA), nuclear factor-κB(NF-κB), tumor necrosis factor alpha (TNF-α) and interleukin-1 beta(IL-1β) levels in the cochlear nerve tissue of gen- tamicin-treated animals were significantly higher compared to healthy controls and rutin + gentamicin treated rats. On the other hand, the amount of total Glutathione (tGSH) was significantly lower compared to the control and rutin group. Histopatho- logical examination revealed degenerated myelinated nerve fibers in the gentamicin group and Schwann cell nuclei were generally not seen. There was a high accumula- tion of collagen fiber in the tissue and dilated blood capillaries. In the rutin group, my- elinated nerve fibers mostly exhibited normal morphology, Schwann cell nuclei were İsmail Salcan1 evident and the vessels were normal. -
Aldrich Raman
Aldrich Raman Library Listing – 14,033 spectra This library represents the most comprehensive collection of FT-Raman spectral references available. It contains many common chemicals found in the Aldrich Handbook of Fine Chemicals. To create the Aldrich Raman Condensed Phase Library, 14,033 compounds found in the Aldrich Collection of FT-IR Spectra Edition II Library were excited with an Nd:YVO4 laser (1064 nm) using laser powers between 400 - 600 mW, measured at the sample. A Thermo FT-Raman spectrometer (with a Ge detector) was used to collect the Raman spectra. The spectra were saved in Raman Shift format. Aldrich Raman Index Compound Name Index Compound Name 4803 ((1R)-(ENDO,ANTI))-(+)-3- 4246 (+)-3-ISOPROPYL-7A- BROMOCAMPHOR-8- SULFONIC METHYLTETRAHYDRO- ACID, AMMONIUM SALT PYRROLO(2,1-B)OXAZOL-5(6H)- 2207 ((1R)-ENDO)-(+)-3- ONE, BROMOCAMPHOR, 98% 12568 (+)-4-CHOLESTEN-3-ONE, 98% 4804 ((1S)-(ENDO,ANTI))-(-)-3- 3774 (+)-5,6-O-CYCLOHEXYLIDENE-L- BROMOCAMPHOR-8- SULFONIC ASCORBIC ACID, 98% ACID, AMMONIUM SALT 11632 (+)-5-BROMO-2'-DEOXYURIDINE, 2208 ((1S)-ENDO)-(-)-3- 97% BROMOCAMPHOR, 98% 11634 (+)-5-FLUORODEOXYURIDINE, 769 ((1S)-ENDO)-(-)-BORNEOL, 99% 98+% 13454 ((2S,3S)-(+)- 11633 (+)-5-IODO-2'-DEOXYURIDINE, 98% BIS(DIPHENYLPHOSPHINO)- 4228 (+)-6-AMINOPENICILLANIC ACID, BUTANE)(N3-ALLYL)PD(II) CL04, 96% 97 8167 (+)-6-METHOXY-ALPHA-METHYL- 10297 ((3- 2- NAPHTHALENEACETIC ACID, DIMETHYLAMINO)PROPYL)TRIPH 98% ENYL- PHOSPHONIUM BROMIDE, 12586 (+)-ANDROSTA-1,4-DIENE-3,17- 99% DIONE, 98% 13458 ((R)-(+)-2,2'- 963 (+)-ARABINOGALACTAN BIS(DIPHENYLPHOSPHINO)-1,1'- -
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 -
An Overview on “Stages of Anesthesia and Some Novel General Anesthetics Drug”
Rohit Jaysing Bhor. et al. /Asian Journal of Research in Chemistry and Pharmaceutical Sciences. 5(4), 2017, 132-140. Review Article ISSN: 2349 – 7106 Asian Journal of Research in Chemistry and Pharmaceutical Sciences Journal home page: www.ajrcps.com AN OVERVIEW ON “STAGES OF ANESTHESIA AND SOME NOVEL GENERAL ANESTHETICS DRUG” Rohit Jaysing Bhor *1 , Bhadange Shubhangi 1, C. J. Bhangale 1 1* Department of Pharmaceutical Chemistry, PRES’s College of Pharmacy Chincholi, Tal-Sinner, Dist-Nasik, Maharashtra, India. ABSTRACT Anesthesia is a painless performance of medical producers. There are both major and minor risks of anesthesia. Anesthesia is a state of temporary induced loss of sensation or awareness. It gives analgesia i.e. relief from pain or prevention of pain and paralysis. General anaesthesia is a medically induced state of unconsciousness. It gives loss of protective reflux. It is carried out to allow medical procedures or medical surgery. It can be classified into 3 types like Intravenous Anesthetics Drug; Miscellaneous Drug; and Inhalational anesthetic Drug. Sodium thiopental is an ultra-short-acting barbiturate and has been used commonly in the induction phase of anesthesia. Methohexital is an example of barbiturates derivatives. It is classified as short-acting, and has a rapid onset of action. KEYWORDS Anesthesia, Sodium thiopental, Methohexital and Propofol. Author for Correspondence: INTRODUCTON Anesthesia is a state of temporary induced loss of sensation or awareness. It gives analgesia i.e. relief 1 Rohit Jaysing Bhor, from pain or prevention of pain and paralysis . A patient under the effects of anesthetic drug is known Department of Pharmaceutical Chemistry, as anesthetized. -
Naming Molecular Compounds General Instructions: Please Do the Activities for Each Day As Indicated
Teacher Name: Dwight Lillie Student Name: ________________________ Class: ELL Chemistry Period: Per 4 Assignment: Assignment week 2 Due: Friday, 5/8 Naming Molecular Compounds General Instructions: Please do the activities for each day as indicated. Any additional paper needed please attach. Submitted Work: 1) Completed packet. Questions: Please send email to your instructor and/or attend published virtual office hours. Schedule: Date Activity Monday (4/27) Read Sections 9.3, 9.5 in your textbook. Tuesday (4/28) Read and work through questions 1-9 Wednesday (4/29) Read and work through questions 10-14 Thursday (4/30) Read and work through questions 14-18 Friday (5/31) Read and work through questions 19-21 How are the chemical formula and name of a molecular compound related? Why? When you began chemistry class this year, you probably already knew that the chemical formula for carbon dioxide was CO2. Today you will find out why CO2 is named that way. Naming chemical compounds correctly is of paramount importance. The slight difference between the names carbon monoxide (CO, a poisonous, deadly gas) and carbon dioxide (CO2, a greenhouse gas that we exhale when we breathe out) can be the difference between life and death! In this activity you will learn the naming system for molecular compounds. Model 1 – Molecular Compounds Molecular Number of Atoms Number of Atoms in Name of Compound Formula of First Element Second Element ClF Chlorine monofluoride ClF5 1 5 Chlorine pentafluoride CO Carbon monoxide CO2 Carbon dioxide Cl2O Dichlorine monoxide PCl5 Phosphorus pentachloride N2O5 Dinitrogen pentoxide 1. Fill in the table to indicate the number of atoms of each type in the molecular formula. -
H2CS) and Its Thiohydroxycarbene Isomer (HCSH
A chemical dynamics study on the gas phase formation of thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH) Srinivas Doddipatlaa, Chao Hea, Ralf I. Kaisera,1, Yuheng Luoa, Rui Suna,1, Galiya R. Galimovab, Alexander M. Mebelb,1, and Tom J. Millarc,1 aDepartment of Chemistry, University of Hawai’iatManoa, Honolulu, HI 96822; bDepartment of Chemistry and Biochemistry, Florida International University, Miami, FL 33199; and cSchool of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, Northern Ireland, United Kingdom Edited by Stephen J. Benkovic, The Pennsylvania State University, University Park, PA, and approved August 4, 2020 (received for review March 13, 2020) Complex organosulfur molecules are ubiquitous in interstellar molecular sulfur dioxide (SO2) (21) and sulfur (S8) (22). The second phase clouds, but their fundamental formation mechanisms have remained commences with the formation of the central protostars. Tempera- largely elusive. These processes are of critical importance in initiating a tures increase up to 300 K, and sublimation of the (sulfur-bearing) series of elementary chemical reactions, leading eventually to organo- molecules from the grains takes over (20). The subsequent gas-phase sulfur molecules—among them potential precursors to iron-sulfide chemistry exploits complex reaction networks of ion–molecule and grains and to astrobiologically important molecules, such as the amino neutral–neutral reactions (17) with models postulating that the very acid cysteine. Here, we reveal through laboratory experiments, first sulfur–carbon bonds are formed via reactions involving methyl electronic-structure theory, quasi-classical trajectory studies, and astro- radicals (CH3)andcarbene(CH2) with atomic sulfur (S) leading to chemical modeling that the organosulfur chemistry can be initiated in carbonyl monosulfide and thioformaldehyde, respectively (18). -
UV-Spectrum of Thioformaldehyde-S-Oxide
Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2013 Matrix Isolation and Spectroscopic Properties • of the Methylsulfinyl Radical CH3(O)S [a] [b] [b] Hans Peter Reisenauer,* Jaroslaw Romanski, Grzegorz Mloston,* Peter R. Schreiner[a] [a] Justus-Liebig University, Institute of Organic Chemistry, Heinrich-Buff-Ring 58, D-35392 Giessen, Fax: (+49) 641-99-34209; E-mail: [email protected] [b] University of Lodz, Section of Heteroorganic Compounds, Tamka 12, PL-91-403 Lodz, Fax: (+48) (42) 665 51 62; E-mail: [email protected] Supplementary Information Table S1. Experimental (Ar, 10 K) and computed (AE-CCSD(T)/cc-pVTZ, harmonic approximation, no scaling) the IR spectra of 3. 13 3 C-3 D3-3 a b a b a b Sym. Approx. Band Position (Intensity) Band Position (Intensity) Band Position (Intensity) Mode Computation Experiment Computation Experiment Computation Experiment a’’ CH str. 3151.3 (2.1) 2995.4 3139.3 (2.1) n.o. 2336.4 (1.2) 2247.2 a’ CH str. 3149.3 (4.1) (vw) 3137.5 (4.0) n.o. 2334.5 (2.2) (vw) 2919.4 2095.5 a’ CH str. 3065.6 (4.3) 3062.7 (4.5) n.o. 2194.2 (1.4) (vw) (vw) CH 1062.8 a’ 3 1477.4 (6.5) 1417.1 (w) 1474.8 (6.6) 1414.6 (w) 1028.7 (s) def. (17.3) CH a’’ 3 1464.4 (7.8) 1405.2 (w) 1461.7 (7.8) 1401.4 (w) 1058.5 (3.7) 1025.6 (w) def.