Methyl bromide suppliers
Methyl bromide
- CAS:
- 74-83-9
- MF:
- CH3Br
- MW:
- 94.94
Company Type
Properties
- Melting point:
- −94 °C(lit.)
- Boiling point:
- 4 °C(lit.)
- Density
- 1.7 g/cm3
- vapor density
- 3.3 (20 °C, vs air)
- vapor pressure
- 1420 mm Hg ( 20 °C)
- refractive index
- 1.4432
- Flash point:
- -34 °C
- storage temp.
- 2-8°C
- solubility
- water: soluble
- form
- Colorless gas
- explosive limit
- ~16%
- Water Solubility
- 1.522 g/100 mL
- Merck
- 13,6056
- Henry's Law Constant
- 0.72 at 21 °C (Gan and Yates, 1996)
- Dielectric constant
- 9.8（0℃）
- Exposure limits
- NIOSH REL: IDLH 250 ppm; OSHA PEL: C 20 ppm; ACGIH TLV: TWA 5 ppm.
- Stability:
- Stable. Incompatible with oxidizing agents, strong acids. This is an ozone-depleting chemical, and its use is restricted in many countries.
- LogP
- 1.190
Safety Information
- Symbol(GHS)
GHS06,GHS08,GHS09,GHS02,GHS07
- Signal word
- Danger
- Hazard statements
- H225-H301+H311+H331-H370-H302+H332-H315-H319-H335-H336-H341-H373-H400-H420-H280-H301+H331
- Precautionary statements
- P210-P280-P302+P352+P312-P304+P340+P312-P370+P378-P403+P235-P261-P273-P281-P305+P351+P338-P301+P310-P311
- Hazard Codes
- T,N,Xn,F,F+
- Safety Statements
- 15-27-36/39-38-45-59-61-36/37-26-24-16-7
- RIDADR
- UN 1062 2.3
- WGK Germany
- 3
- RTECS
- PA4900000
- DOT Classification
- 2.3, Hazard Zone C (Gas poisonous by inhalation)
- HazardClass
- 2.3
- HS Code
- 29033990
- Toxicity
- LC for rats in air (6 hrs): 514 ppm (Irish)
- IDLA
- 250 ppm
Use
Methyl bromide is used as a fumigant and pesticide. Exposure may occur during fumigation activities. Methyl bromide is a broad-spectrum fumigant that has been used around the world since the 1930s as a pre-plant soil fumigant to control insects, pathogens, and weeds, and to control insects in buildings and in commodities. It is also used for quarantine and pre-shipment applications. Methyl bromide is one of the very few chemicals that were approved for broad-spectrum use in agriculture and pest control. The dominant use of methyl bromide worldwide is for pre-planting soil fumigation. 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. 1992, Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer recognized that methyl bromide has an ozone-depleting potential (ODP); thus it is identified as an ozone-depleting substance.
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