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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. -
Conversion of Carbon Dioxide to Acetylene on a Micro Scale
810 NATURE June 14, 1947 Vol. 159 orbitale of the ethmoid is reduced". In the orang Stainless steel was found to be the most satis and the gibbon a large planum orbitale articulates factory furnace material tried. From mild steel in front with the lacrimal, as in man. The figure relatively large amounts of acetylene were produced we give of the orbital wall in Pleaianthropus shows in blank experiments, and a fused silica envelope a condition almost exactly as in man. fitted with a nickel thimble was found, after it had We are here not at present concerned with the been used with calcium and barium metals, to absorb question of whether man and the Australopithecinre carbon dioxide when hot even when no calcium or have arisen from an early anthropoid, or a pre barium was present. In carrying out the absorption anthropoid, or an Old World monkey or a tarsioid ; of carbon dioxide by barium metal in the stainless but we think the evidence afforded by this new skull steel furnace it was found that when the pressure of Plesianthropus shows that the Australopithecinre at which the gas was admitted was less than about and man are very closely allied, and that these small 10·1 mm. of mercury, the yield of acetylene was brained man-like beings were very nearly human. variable and only about 45 per cent. Good yields R. BROOM were obtained when the carbon dioxide at its full J. T. RoBINSON pressure was admitted to the furnace before raising Transvaal Museum, Pretoria. the temperature above 400° C. -
And Abiogenesis
Historical Development of the Distinction between Bio- and Abiogenesis. Robert B. Sheldon NASA/MSFC/NSSTC, 320 Sparkman Dr, Huntsville, AL, USA ABSTRACT Early greek philosophers laid the philosophical foundations of the distinction between bio and abiogenesis, when they debated organic and non-organic explanations for natural phenomena. Plato and Aristotle gave organic, or purpose-driven explanations for physical phenomena, whereas the materialist school of Democritus and Epicurus gave non-organic, or materialist explanations. These competing schools have alternated in popularity through history, with the present era dominated by epicurean schools of thought. Present controversies concerning evidence for exobiology and biogenesis have many aspects which reflect this millennial debate. Therefore this paper traces a selected history of this debate with some modern, 20th century developments due to quantum mechanics. It ¯nishes with an application of quantum information theory to several exobiology debates. Keywords: Biogenesis, Abiogenesis, Aristotle, Epicurus, Materialism, Information Theory 1. INTRODUCTION & ANCIENT HISTORY 1.1. Plato and Aristotle Both Plato and Aristotle believed that purpose was an essential ingredient in any scienti¯c explanation, or teleology in philosophical nomenclature. Therefore all explanations, said Aristotle, answer four basic questions: what is it made of, what does it represent, who made it, and why was it made, which have the nomenclature material, formal, e±cient and ¯nal causes.1 This aristotelean framework shaped the terms of the scienti¯c enquiry, invisibly directing greek science for over 500 years. For example, \organic" or \¯nal" causes were often deemed su±cient to explain natural phenomena, so that a rock fell when released from rest because it \desired" its own kind, the earth, over unlike elements such as air, water or ¯re. -
1,1,1,2-Tetrafluoroethane
This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the United Nations Environment Programme, the International Labour Organisation, or the World Health Organization. Concise International Chemical Assessment Document 11 1,1,1,2-Tetrafluoroethane First draft prepared by Mrs P. Barker and Mr R. Cary, Health and Safety Executive, Liverpool, United Kingdom, and Dr S. Dobson, Institute of Terrestrial Ecology, Huntingdon, United Kingdom Please not that the layout and pagination of this pdf file are not identical to the printed CICAD Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization, and produced within the framework of the Inter-Organization Programme for the Sound Management of Chemicals. World Health Organization Geneva, 1998 The International Programme on Chemical Safety (IPCS), established in 1980, is a joint venture of the United Nations Environment Programme (UNEP), the International Labour Organisation (ILO), and the World Health Organization (WHO). The overall objectives of the IPCS are to establish the scientific basis for assessment of the risk to human health and the environment from exposure to chemicals, through international peer review processes, as a prerequisite for the promotion of chemical safety, and to provide technical assistance in strengthening national capacities for the sound management of chemicals. The Inter-Organization -
SAFETY DATA SHEET Difluoromethane (R32) SECTION 1
SAFETY DATA SHEET Difluoromethane (R32) Issue Date: 16.01.2013 Version: 1.1 SDS No.: 000010021734 Last revised date: 26.11.2018 1/14 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1 Product identifier Product name: Difluoromethane (R32) Other Name: HFC-32 Additional identification Chemical name: Difluoromethane Chemical formula: CH2F2 INDEX No. - CAS-No. 75-10-5 EC No. 200-839-4 REACH Registration No. 01-2119471312-47 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. Refrigerant. Use as an Intermediate (transported, on-site isolated). Use for electronic component manufacture. Using gas alone or in mixtures for the calibration of analysis equipment. 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 SECTION 2: Hazards identification 2.1 Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 as amended. Physical Hazards Flammable gas Category 1 H220: Extremely flammable gas. Gases under pressure Liquefied gas H280: Contains gas under pressure; may explode if heated. SDS_AT - 000010021734 SAFETY DATA SHEET Difluoromethane (R32) Issue Date: 16.01.2013 Version: 1.1 SDS No.: 000010021734 Last revised date: 26.11.2018 2/14 2.2 Label Elements Signal Words: Danger Hazard Statement(s): H220: Extremely flammable gas. -
Chemistry 234 Chapter 16 Problem Set Electrophilic Aromatic
Chemistry 234 Chapter 16 Problem Set Electrophilic Aromatic Substitution 1) Predict the product and draw the mechanism for electrophile generation for each of the following reactions. Cl (a) 2 FeCl3 HNO3 (b) H2SO4 SO (c) 3 H2SO4 2) Explain why reaction of benzene with Br2/FeBr3 results in the product bromobenzne instead of 5,6-dibromo-1,3-cyclohexadiene. 3) Predict the product and draw the active electrophile for each reaction shown below. Cl (a) AlCl3 Cl (b) AlCl3 Cl O (c) AlCl3 Page 1 of 13 Chem. 234 – Chapter 16 Problem Set 4) Explain why each of the following substrates do not undergo Freidel-Crafts reactions. NH2 NO2 N(CH3)3 NH 5) Arrange the following benzene substituents in order of reactivity in electrophilic aromatic substitution reactions. O Cl Ph Ph N Ph Ph H O N H S Ph N Ph Ph Ph O O 6) Predict the maJor products when the following benzene derivatives are treated to nitration conditions (HNO3/H2SO4). a. O Br b. NH2 Br c. NO2 Cl 7) Write the full electron pushing mechanism for the nitration of toluene. Page 2 of 13 Chem. 234 – Chapter 16 Problem Set 8) Predict the product(s) when each of the following benzene derivatives is treated to chloroethane and AlCl3. a. Br b. NH2 Cl c. OH Br d. OH Cl Cl e. NO2 Cl Cl f. Br Br g. SO3H Page 3 of 13 Chem. 234 – Chapter 16 Problem Set 9) Predict the product(s) when the following benzene derivatives are subjected to electrophilic chlorination conditions (Cl2, FeCl3). -
Dichlorodifluoromethane Dcf
DICHLORODIFLUOROMETHANE DCF CAUTIONARY RESPONSE INFORMATION 4. FIRE HAZARDS 7. SHIPPING INFORMATION 4.1 Flash Point: 7.1 Grades of Purity: 99.5% (vol.) Common Synonyms Gas Colorless Faint odor Not flammable 7.2 Storage Temperature: Ambient Arcton 6 4.2 Flammable Limits in Air: Not flammable Eskimon 12 7.3 Inert Atmosphere: No requirement 4.3 Fire Extinguishing Agents: Not F-12 Visible vapor cloud is produced. 7.4 Venting: Safety relief flammable Freon 12 7.5 IMO Pollution Category: Currently not available Frigen 12 4.4 Fire Extinguishing Agents Not to Be Genetron 12 Used: Not flammable 7.6 Ship Type: Currently not available Halon 122 4.5 Special Hazards of Combustion 7.7 Barge Hull Type: 3 Isotron 12 Products: Although nonflammable, Ucon 12 dissociation products generated in a fire may be irritating or toxic. 8. HAZARD CLASSIFICATIONS Notify local health and pollution control agencies. 4.6 Behavior in Fire: Helps extinguish fire. 8.1 49 CFR Category: Nonflammable gas Avoid inhalation. 4.7 Auto Ignition Temperature: Not 8.2 49 CFR Class: 2.2 flammable 8.3 49 CFR Package Group: Not pertinent. Not flammable. 4.8 Electrical Hazards: Not pertinent Fire Cool exposed containers with water. 8.4 Marine Pollutant: No 4.9 Burning Rate: Not flammable 8.5 NFPA Hazard Classification: Not listed 4.10 Adiabatic Flame Temperature: Currently 8.6 EPA Reportable Quantity: 5000 pounds CALL FOR MEDICAL AID. not available Exposure 8.7 EPA Pollution Category: D 4.11 Stoichometric Air to Fuel Ratio: Not VAPOR 8.8 RCRA Waste Number: U075 Not irritating to eyes, nose or throat. -
SAFETY DATA SHEET Halocarbon R-503
SAFETY DATA SHEET Halocarbon R-503 Section 1. Identification GHS product identifier : Halocarbon R-503 Other means of : Not available. identification Product type : Liquefied gas Product use : Synthetic/Analytical chemistry. SDS # : 007306 Supplier's details : Airgas USA, LLC and its affiliates 259 North Radnor-Chester Road Suite 100 Radnor, PA 19087-5283 1-610-687-5253 24-hour telephone : 1-866-734-3438 Section 2. Hazards identification OSHA/HCS status : This material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200). Classification of the : GASES UNDER PRESSURE - Liquefied gas substance or mixture HAZARDOUS TO THE OZONE LAYER - Category 1 GHS label elements Hazard pictograms : Signal word : Warning Hazard statements : Contains gas under pressure; may explode if heated. May cause frostbite. May displace oxygen and cause rapid suffocation. Harms public health and the environment by destroying ozone in the upper atmosphere. Precautionary statements General : Read and follow all Safety Data Sheets (SDS’S) before use. Read label before use. Keep out of reach of children. If medical advice is needed, have product container or label at hand. Close valve after each use and when empty. Use equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Use a back flow preventative device in the piping. Use only equipment of compatible materials of construction. Always keep container in upright position. Prevention : Not applicable. Response : Not applicable. Storage : Protect from sunlight. Store in a well-ventilated place. Disposal : Refer to manufacturer or supplier for information on recovery or recycling. Hazards not otherwise : Liquid can cause burns similar to frostbite. -
United States Patent Office Patented Feb
3,794,643 United States Patent Office Patented Feb. 26, 1974 1. 2 3,794,643 aZolinedione derivatives are produced by reacting the QUINAZOLINEDONE DERIVATIVES compounds having the following general formula: Takahiro Yabuuchi, Takarazuka, and Hajime Fujimura, Akira Nakagawa, and Ryuichi Kimura, Kyoto, Japan, assignors to Hisamitsu Pharmaceutical Co., Inc., Tosu, Saga Prefecture, Japan No Drawing. Filed Apr. 20, 1971, Ser. No. 135,693 int, C. C07, 51/48 U.S. C. 260-260 8 Claims ABSTRACT OF THE DISCLOSURE O The present invention relates to novel quinazolinedione R3 R2 derivatives possessing excellent anti-inflammatory action and analgesic action, and process for the production (wherein R2 and/or Rs have the same meaning as men thereof by reacting the compounds having the following 5 tioned above) with the general formula, RX or RSO, general formula, (wherein R represents the same substances as mentioned O above), R represents lower alkyl radical, and X repre C Sents halogen atom). Consequently, the reaction of the present invention can be understood as being alkylation. 20 The abovementioned compounds used as starting reac tion materials in the present invention can be obtained in good yield by reacting N-phenylanthranilic acid or N substituted phenylanthranilic acid with urea. The quinazolinedione derivatives used as the afore Rs R 25 said starting reaction materials include 1-phenyl-2,4- (1H,3H)-quinazolinedione or 1-substituted phenyl-2,4- (1H,3H)-quinazolinedione, for example, (wherein R and/or R3 represent hydrogen atom, CFs, 1-(3'-triuuoromethylphenyl-2,4(1H,3H)- -
The Formation of Butane in the Polymerization of Methyl Methacrylate with Butyllithium
Polymer Journal, Vol. 12, No. 8, pp 535-537 (1980) SHORT COMMUNICATION The Formation of Butane in the Polymerization of Methyl Methacrylate with Butyllithium Koichi HATADA, Tatsuki KITAYAMA, and Heimei YUKI Department of Chemistry, Faculty of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560, Japan. (Received February 28, 1980) KEY WORDS Methyl Methacrylate I Perdeuterated Methyl Methacrylate I Anionic Polymerization I Butyllithium I Toluene I Tetrahydrofuran I Butane Formation I Mass Spectroscopy I Butene I It has been found that a small amount of butane merization reactions in toluene: (1) the poly is formed when the polymerization of methyl merization of MMA terminated by CH30D methacrylate is initiated with butyllithium and (MMA-CH30D system) and (2) that of MMA-d8 terminated with acetic acid. The origin of the butane terminated by CH3 0H (MMA-d8-CH3 0H system). was not clear, although the proton abstraction from The reactions were quenched at 10 min following the monomer is assumed. 1 the initiation. The spectra of butane (BuH) and In this work the polymerizations of undeuterated butane-d-1, CH3 CH2 CH2CH2 D, (BuD) are also (MMA) and perdeuterated (MMA-d8 ) methyl shown for comparison. The BuH and BuD were methacrylates were initiated with undeuterated obtained by the reaction of BuLi with CH30H and butyllithium (BuLi) and terminated by CH3 0D and CH30D, respectively. By inspecting these four CH3 0H, respectively. Deuterium distributions in spectra, it can be seen that the butane from the the butane formed were determined by combined MMA-CH3 0D system mainly consists of BuD and gas-liquid phase chromatography-mass spectrom the butane from the MMA-d8-CH30H system is etry. -
Turbine Expanderexpander
CryogenicsCryogenics –– whywhy?? MaciejMaciej ChorowskiChorowski WroclawWroclaw UniversityUniversity ofof TechnologyTechnology FacultyFaculty ofof MechanicalMechanical andand PowerPower EngineeringEngineering European Cryogenic Course Wroclaw 20 - 25 April, 2009 T, K 10 10 The word cryogenics was introduced by Core of the hottest stars 9 Kamerlingh Onnes and is formed from the 10 8 Greek: 10 Fusion reaction of hydrogen 7 10 Core of the Sun 6 – cold 10 5 10 – generated from TEMPERATUREVERY HIGH Plasma 4 10 Surface of the Sun 3 According to the convention adopted at the 10 Steam turbine Biological processes XIIII Congress of the International Institute of 2 10 High temperature superconductivity Boiling temperature of nitrogen Refrigeration, cryogenics treats concepts and Low temperature superconductivity 10 technologies connected to reaching and Boiling temperature of helium Superfluid helium 4 applying temperature below 120 K. 1 -1 In cryogenic temperatures: 10 -2 10 -3 - new physical phenomena are visible (liquefaction 10 Superfluid helium 3 -4 of gases, superfluidity, superconductivity); 10 -5 - all the reactions are slowed down; 10 The lowest measured temperature in the whole volume of a probe -6 - dis-order in the matter is vanishing, noises are 10 VERY LOW TEMPERATUREVERY LOW -7 avoided (cryo-electronics). 10 The lowest temperaure of copper nuclei -8 European Cryogenic Course 10 CERN Geneva 2010 -9 10 Bose-Einstein condensate HistoricalHistorical developmentdevelopment ofof cryogenicscryogenics andand relatedrelated technologiestechnologies