Back برومو الميثان Arabic Bromometà Catalan Methylbromid Czech Brommethan German Βρωμομεθάνιο Greek Bromo-metano Esperanto Bromuro de metilo Spanish برومو متان Persian Metyylibromidi Finnish Bromométhane French
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| Names | |||
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| Preferred IUPAC name
Bromomethane[1] | |||
| Identifiers | |||
3D model (JSmol)
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| 1209223 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.000.740 | ||
| EC Number |
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| 916 | |||
| KEGG | |||
| MeSH | methyl+bromide | ||
PubChem CID
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| RTECS number |
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| UNII | |||
| UN number | 1062 | ||
CompTox Dashboard (EPA)
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| Properties | |||
| CH3Br | |||
| Molar mass | 94.939 g·mol−1 | ||
| Appearance | Colorless gas[2] | ||
| Odor | Chloroform-like | ||
| Density | 3.97 kg/m3 (gas, 0 °C)[2] 1.72 g/mL (liquid, 4 °C)[2] | ||
| Melting point | −93.66 °C (−136.59 °F; 179.49 K)[2] | ||
| Boiling point | 4.0 °C (39.2 °F; 277.1 K)[2] | ||
| 17.5 gL−1[2] | |||
| log P | 1.3 | ||
| Vapor pressure | 190 kPa (at 20 °C, 68 °F) | ||
| −42.8·10−6 cm3·mol−1 | |||
| Thermochemistry | |||
Std enthalpy of
formation (ΔfH⦵298) |
−35.1 – −33.5 kJ·mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
   
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| Danger | |||
| H301, H315, H319, H331, H335, H341, H373, H400, H420 | |||
| P201, P202, P260, P261, P264, P270, P271, P273, P280, P281, P301+P310, P302+P352, P304+P340, P305+P351+P338, P308+P313, P311, P312, P314, P321, P330, P332+P313, P337+P313, P362, P391, P403+P233, P405, P501, P502 | |||
| NFPA 704 (fire diamond) | |||
| Flash point | 194 °C (381 °F; 467 K)[2] | ||
| 535 °C (995 °F; 808 K)[2] | |||
| Explosive limits | 10-16%[3] | ||
| Lethal dose or concentration (LD, LC): | |||
LC50 (median concentration)
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LCLo (lowest published)
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300 ppm (guinea pig, 9 hr)[4] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
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C 20 ppm (80 mg/m3) [skin][3] | ||
REL (Recommended)
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Ca[3] | ||
IDLH (Immediate danger)
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Ca [250 ppm][3] | ||
| Related compounds | |||
Related alkanes
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Bromomethane, commonly known as methyl bromide, is an organobromine compound with formula CH3Br. This colorless, odorless, nonflammable gas is produced both industrially and biologically. It is a recognized ozone-depleting chemical. According to the IPCC Fifth Assessment Report, it has a global warming potential of 2.[5] It was used extensively as a pesticide until being phased out by most countries in the early 2000s.[6] From a chemistry perspective, it is one of the halomethanes.
- ^ "methyl bromide - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification. Archived from the original on 2012-10-05. Retrieved 2012-02-26.
- ^ a b c d e f g h Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
- ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0400". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b "Methyl bromide". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ [1], Global Warming Potential Values
- ^ Yoffe, David; Frim, Ron; Ukeles, Shmuel D.; Dagani, Michael J.; Barda, Henry J.; Benya, Theodore J.; Sanders, David C. (2013). "Bromine Compounds". Ullmann's Encyclopedia of Industrial Chemistry. pp. 1–31. doi:10.1002/14356007.a04_405.pub2. ISBN 978-3-527-30385-4.