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295485

Sigma-Aldrich

Bromomethane

≥99%

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Synonym(s):
Methyl bromide
Empirical Formula (Hill Notation):
CH3Br
CAS Number:
74-83-9
Molecular Weight:
94.94
Beilstein:
1209223
EC Number:
200-813-2
MDL number:
MFCD00000166
UNSPSC Code:
12352100
PubChem Substance ID:
24857788
NACRES:
NA.22

vapor density

3.3 (20 °C, vs air)

Quality Level

200

vapor pressure

1420 mmHg ( 20 °C)

Assay

≥99%

autoignition temp.

996 °F

expl. lim.

~16 %

bp

4 °C (lit.)

mp

−94 °C (lit.)

solubility

water: soluble

density

3.3 g/mL at 25 °C (lit.)

SMILES string

CBr

InChI

1S/CH3Br/c1-2/h1H3

InChI key

GZUXJHMPEANEGY-UHFFFAOYSA-N

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General description

Bromomethane (methyl bromide) is the most effective soil fumigant for killing plant pests, its use is being phased out because its emissions from soil can lead to stratospheric ozone depletion. The bimolecular nucleophilic substitution (S(N)2) reaction of methyl bromide and OH- in aqueous solution has been investigated using a multilayered-representation quantum mechanical and molecular mechanics methodology.

Application

Please view www.aldrich.com/epaods regarding the EPA′s request for application information of Ozone Depleting Substances

Recommended products

Brass control valve Z146943 or either of brass regulators Z146706 and Z146714 is recommended.

recommended

Product No.
Description
Pricing

regulator

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Irrit. 2 - Muta. 2 - Ozone 1 - Press. Gas Liquefied gas - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

Target Organs

Central nervous system, Respiratory system

WGK

WGK 3

Flash Point(F)

<-22.0 °F

Flash Point(C)

< -30 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Richeng Xuan et al.
Environmental science & technology, 44(23), 9080-9085 (2010-11-10)
Despite generally being considered the most effective soil fumigant, methyl bromide (MeBr) use is being phased out because its emissions from soil can lead to stratospheric ozone depletion. However, a large amount is still currently used due to Critical Use
Guy J Hallman et al.
Journal of economic entomology, 104(1), 63-68 (2011-03-17)
Methyl bromide fumigation is widely used as a phytosanitary treatment. Mexican fruit fly, Anastrepha ludens (Loew) (Diptera: Tephritidae), is a quarantine pest of several fruit, including citrus (Citrus spp.), exported from Texas, Mexico, and Central America. Recently, live larvae have
Yulong Xu et al.
The Journal of chemical physics, 137(18), 184501-184501 (2012-11-21)
The bimolecular nucleophilic substitution (S(N)2) reaction of CH(3)Br and OH(-) in aqueous solution was investigated using a multilayered-representation quantum mechanical and molecular mechanics methodology. Reactant complex, transition state, and product complex are identified and characterized in aqueous solution. The potentials
Kathryn Hughes Barry et al.
Cancer causes & control : CCC, 23(6), 807-818 (2012-04-25)
Methyl bromide is a genotoxic soil fumigant with high acute toxicity, but unknown human carcinogenicity. Although many countries have reduced methyl bromide use because of its ozone depleting properties, some uses remain in the United States and other countries, warranting
Lygia T Budnik et al.
Environmental health : a global access science source, 11, 5-5 (2012-01-31)
Although ozone-depleting methyl bromide was destined for phase-out by 2005, it is still widely applied as a consequence of various critical-use-exemptions and mandatory international regulations aiming to restrict the spread of pests and alien species (e.g. in globalized transport and
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