Methyl bromide
Also known as Bromomethane, Monobromomethane, Embafume
Key facts
What buyers check first
- Appearance
- Colorless, transparent, easily liquified gas or volatile liquid
- Melting point
- -93.7 °C
- Boiling point
- 3.4 °C
- Density
- 1.6755 g/cm³ at 20 °C
- Flash point
- 194 °C
- HS code
- 290361
- Category
- Insecticides and acaricides
- UN number
- UN 1062
What is Methyl bromide?
Plain description, key identifiers and synonyms
Bromomethane is a one-carbon compound in which the carbon is attached by single bonds to three hydrogen atoms and one bromine atom. It is produced naturally by marine algae. It has a role as a fumigant insecticide, a marine metabolite and an algal metabolite. It is a bromohydrocarbon, a member of methyl halides and a member of bromomethanes.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- bromomethane
- CAS number
- 74-83-9 CAS number cross-checked
- EC number
- 200-813-2
- Molecular formula
- CH3Br
- UNII
- 9V42E1Z7B6
- MDL number
- MFCD00000166
- InChIKey
- GZUXJHMPEANEGY-UHFFFAOYSA-N
- InChI
- InChI=1S/CH3Br/c1-2/h1H3
- SMILES (canonical and isomeric)
- CBr
Synonyms
- Bromomethane
- Monobromomethane
- Embafume
- Terabol
- methylbromide
- Curafume
- Metafume
- Haltox
- CH3Br
- Mebr
- Methane, bromo-
- Iscobrome
- Kayafume
- Methogas
- Methylbromid
- Pestmaster
- Celfume
- Zytox
- Edco
- Halon 1001
- Bromometano
- Broommethaan
- Brom-O-Gas
- Brom-O-Sol
- Detia gas EX-M
Show all 39 synonymsShow fewer synonyms
- Meth-O-Gas
- Dowfume MC-2
- Metylu bromek
- Brom-methan
- Methyl fume
- Dowfume MC-33
- Dawson 100
- Tri-Brom
- Terr-O-gas 67
- Bromuro di metile
- Bromure de methyle
- Terr-O-gas 100
- Terr-O-Gas
- M-B-C Fumigant
Physical and chemical properties
Measured values and descriptors computed from the structure
Physical and chemical properties
Measured values, check the supplier specification for your grade
| Appearance | Colorless, transparent, easily liquified gas or volatile liquidexp.Measured value |
|---|---|
| Odour | Usually odorless, sweetish, chloroform-like odor at high concentrationsexp.Measured value |
| Taste | Burning tasteexp.Measured value |
| Melting point | -93.7 °Cexp.Measured value |
| Boiling point | 3.4 °Cexp.Measured value |
| Density | 1.6755 g/cm³ at 20 °Cexp.Measured value |
| Flash point | 194 °Cexp.Measured value |
| Autoignition temperature | 537 °Cexp.Measured value |
| Solubility | In water, 15,200 mg/L at 25 °Cexp.Measured value |
| Vapour pressure | VP: 1893 kPa at 20 °C (1420 mm Hg)exp.Measured value |
Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.
Computed descriptors
Calculated from the structure, useful for screening and formulation
| Molecular weight | 94.94 g/molcalc.Computed value |
|---|---|
| Exact mass | 93.9418 Dacalc.Computed value |
| LogP (octanol/water) | 1.01calc.Computed value |
| Topological polar surface area | 0 Ųcalc.Computed value |
| Hydrogen bond donors | 0calc.Computed value |
| Hydrogen bond acceptors | 0calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 2calc.Computed value |
| Rings | 0calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 1calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
| Lipinski rule of five | Passes (0 violations)calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Safety and hazards
GHS classification summary, not a safety data sheet
Hazard statements
- H301Toxic if swallowed.
- H315Causes skin irritation.
- H319Causes serious eye irritation.
- H331Toxic if inhaled.
- H335May cause respiratory irritation.
- H341Suspected of causing genetic defects.
- H373May cause damage to organs through prolonged or repeated exposure.
- H400Very toxic to aquatic life.
- H420Harms public health and the environment by destroying ozone in the upper atmosphere.
Precautionary statements (26)
- P203Obtain, read and follow all safety instructions before use.
- P260Do not breathe dust, fume, gas, mist, vapours or spray.
- P261Avoid breathing dust, fume, gas, mist, vapours or spray.
- P264Wash skin thoroughly after handling.
- P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
- P270Do not eat, drink or smoke when using this product.
- P271Use only outdoors or in a well-ventilated area.
- P273Avoid release to the environment.
- P280Wear protective gloves, protective clothing, eye protection and face protection.
- P301 + P316If swallowed: Get emergency medical help immediately.
- P302 + P352If on skin: Wash with plenty of water.
- P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
- P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P316Get emergency medical help immediately.
- P318If exposed or concerned, get medical advice.
- P319Get medical help if you feel unwell.
- P321Specific treatment (see supplemental first aid instructions on the label).
- P330Rinse mouth.
- P332 + P317If skin irritation occurs: Get medical help.
- P337 + P317If eye irritation persists: Get medical help.
- P362 + P364Take off contaminated clothing. And wash it before reuse.
- P391Collect spillage.
- P403 + P233Store in a well-ventilated place. Keep container tightly closed.
- P405Store locked up.
- P501Dispose of contents and container in accordance with local regulations.
- P502Refer to manufacturer or supplier for information on recovery or recycling.
- UN number
- UN 1062
- Transport hazard class
- 2.3
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Full safety data and first aidMethyl bromide suppliers
Controlled substance, listings of documented suppliers only, in the documented ranking
Methyl bromide is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.
Licensed buyers only, every enquiry is reviewed by our compliance team.
Reference: Montreal Protocol on Substances that Deplete the Ozone Layer, HS 2022 subheading 2903.61 (methyl bromide)
Our policy on controlled substancesLicensed buyers can post a request for Methyl bromide with their licence. Our compliance team reviews it before suppliers see it.
Methyl bromide price
Indicative price range per kg from live supplier offers
Suppliers quote this chemical on request. Send one free request and compare quotes side by side.
Uses and applications
What the substance is used for, by industry and function
In ionization chambers. For degreasing wool. Extracting oils from nuts, seeds, and flowers. ... Methylating agent. Has been used as fire extinguishing agent.
Methyl bromide's most prevalent use pattern is as a soil fumigant. It is also used as a post harvest treatment of commodities and structural fumigation. Structural non-food treatments (e.g., residential buildings) are reportedly no longer performed.
Broad-spectrum fumigant chemical that can be used as an acaricide, antimicrobial, fungicide, herbicide, insecticide, nematicide, and vertebrate control agent.
The primary use of methyl bromide is as a fumigant in soil to control fungi, nematodes, and weeds, in space fumigation of food commodities (e.g., grains), and in storage facilities (such as mills, warehouses, vaults, ships, and freight cars) to control insects and rodents.
Industrial uses: Intermediate.
Use classes: Volatile organic compounds.
Industries and functions
Pharmacological actions
- Noxae
Roles
- algal metabolite
- eukaryotic metabolite
- fumigant
- fumigant insecticide
- insecticide
- marine metabolite
- metabolite
- pesticide
Pharmacology
Methyl Bromide is a methyl halide, bromomethane, and bromohydrocarbon that is composed of one carbon, one hydrogen, and three bromine atoms. It is both manufactured and naturally produced by marine algae, and it has a role as a pesticide, a fire extinguishing agent, and in the synthesis of other chemicals. It is characterized as a colorless gas with a chloroform-like odor at high concentrations. Exposure occurs by inhalation, ingestion, or contact.
How it is made
The commercial manufacture of bromomethane is based on the reaction of hydrogen bromide with methanol. The hydrogen bromide used can be generated in situ from bromine and a reducing agent. A new continuous process for the production of bromomethane from methanol and aqueous HBr in the presence of a silica supported heteropolyacid catalyst has recently been described. Bromomethane can also be coproduced with other organic bromine compounds by the reaction of the solvent methanol with hydrogen bromide that is formed as byproduct.
Read more
The processes include coproduction of bromomethane with bromostyrenes, tribromophenol, and especially tetrabromobisphenol A.
Bromomethane ... is produced from methanol and hydrogen bromide, which is generated in situ from bromine and a reducing agent like sulfur or hydrogen sulfide. The commercial process is conducted by continuously feeding streams of liquid bromine, elemental sulfur, and methanol to a reactor maintained at 75-85 °C under a slight positive pressure. Methyl bromide vapor (99% purity) is continuously withdrawn from the reactor overhead system and scrubbed free of dimethyl ether by contacting the gas with a sulfuric acid scrubber. ... By operating at a higher temperature and pressure than described in other similar processes, this process allows for good control of the exothermic reaction, retards the formation of dimethyl ether, and produces methyl bromide in high yield and purity.
Regulatory status
Inventories, regulations and trade controls that list this substance
Methyl bromide is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.
Licensed buyers only, every enquiry is reviewed by our compliance team.
Reference: Montreal Protocol on Substances that Deplete the Ozone Layer, HS 2022 subheading 2903.61 (methyl bromide)
Our policy on controlled substancesEurope
- EU harmonised classification (CLP Annex VI)Index no: 602-002-00-2
Health and food
- EU Cosmetics Regulation Annex II, prohibited in cosmeticsName: Bromomethane (Methyl bromide - ISO), Ref no: 1094, Annex ref: II/1094
Agriculture and environment
- Ozone depleting substance (Montreal Protocol)
United States
- TSCA inventory (USA)Status: Active in US commerce
HS code and trade data
Customs classification and reported world trade statistics
Global trade
World import and export statistics for the HS code Methyl bromide is traded under.
Methyl bromide (bromomethane)
- United States57.9%
- India * partner reported13.8%
- Israel10.1%
- Australia27.1%
- Vietnam * partner reported14.5%
- United States9.2%
* Partner reported figures, a lower bound.
The HS code shown for Methyl bromide is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.
Frequently asked questions
Quick answers about Methyl bromide, based on the data on this page
What is Methyl bromide?
What is the CAS number of Methyl bromide?
What is the molecular formula and weight of Methyl bromide?
What is Methyl bromide used for?
Is Methyl bromide hazardous?
What is the HS code of Methyl bromide?
Can I buy Methyl bromide on CompoundList?
Guides for buyers
Practical guides that help when you source, ship or handle Methyl bromide
- Guide, SafetyHow to read a safety data sheet in 10 minutesA section by section method to pull the essentials out of any 16 section SDS: identity, hazards, composition, storage, PPE, properties, transport and emergency measures.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, SafetyGHS pictograms, signal words and hazard statements explainedA practical guide to the nine GHS pictograms, the signal words Danger and Warning, H and P statements, and how to read a chemical label in seconds.Read
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