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

Bromomethane

Bromomethane
Stereo, skeletal formula of bromomethane with all explicit hydrogens added
Ball and stick model of bromomethane
Ball and stick model of bromomethane
Spacefill model of bromomethane
Spacefill model of bromomethane
Names
Preferred IUPAC name
Bromomethane[1]
Identifiers
3D model (JSmol)
1209223
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.740 Edit this at Wikidata
EC Number
  • 200-813-2
916
KEGG
MeSH methyl+bromide
RTECS number
  • PA4900000
UNII
UN number 1062
  • InChI=1S/CH3Br/c1-2/h1H3 checkY
    Key: GZUXJHMPEANEGY-UHFFFAOYSA-N checkY
  • CBr
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
−35.1 – −33.5 kJ·mol−1
Hazards
GHS labelling:
GHS06: ToxicGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
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)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
1
0
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):
  • 1200 ppm (mouse, 1 hr)
  • 7316 ppm (rabbit, 30 min)
  • 2833 ppm (rat, 1 hr)
  • 302 ppm (rat, 8 hr)
  • 390 ppm (mouse, 9 hr)[4]
300 ppm (guinea pig, 9 hr)[4]
NIOSH (US health exposure limits):
PEL (Permissible)
 C 20 ppm (80 mg/m3) [skin][3]
REL (Recommended)
 Ca[3]
IDLH (Immediate danger)
 Ca [250 ppm][3]
Related compounds
Related alkanes
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. It was used extensively as a pesticide until being phased out by most countries in the early 2000s.[5] From the chemistry perspective, it is one of the halomethanes.

  1. ^ "methyl bromide - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification. Retrieved 2012-02-26.
  2. ^ a b c d e f g h Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
  3. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0400". National Institute for Occupational Safety and Health (NIOSH).
  4. ^ a b "Methyl bromide". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  5. ^ 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.

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