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Chlorinated and fluorinated solvents

Dibromomethane

Also known as Methylene bromide, Methylene dibromide, Methane, dibromo-

CAS 74-95-3Formula CH2Br2Molar mass 173.84 g/molEC 200-824-2
GHS signal word: Warning. Pictograms: Harmful or irritant 23 suppliers listed
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Dibromomethane chemical structure, CH2Br2, CAS 74-95-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Clear, colorless liquid
Melting point
-52.5 °C
Boiling point
97 °C
Density
Relative density (water = 1): 2.5
Solubility
11.70 g/1000 g water @ 15 °C, 11.93 g/1000 g water @ 30 °C
HS code
290369
Category
Chlorinated and fluorinated solvents
UN number
UN 2664
Illustrative photo, 25 litre white jerry cans of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dibromomethane?

Plain description, key identifiers and synonyms

Dibromomethane is a member of the class of bromomethanes that is methane substituted by two bromo groups. It is produced by marine algae. It has a role as a marine metabolite and an algal metabolite. It is a bromohydrocarbon and a member of bromomethanes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dibromomethane
CAS number
74-95-3 CAS number cross-checkedOther or deprecated CAS: 4371-77-1
EC number
200-824-2
Molecular formula
CH2Br2
UNII
V69B659W01
MDL number
MFCD00000168
InChIKey
FJBFPHVGVWTDIP-UHFFFAOYSA-N
InChI
InChI=1S/CH2Br2/c2-1-3/h1H2
SMILES (canonical and isomeric)
C(Br)Br

Synonyms

  • Methylene bromide
  • Methylene dibromide
  • Methane, dibromo-
  • CH2Br2
  • Dibrommethan
  • Methylenbromid
  • Dibromomethylene
  • RCRA waste number U068
  • dibromo-methane
  • 1,1-dibromomethane
  • RCRA waste no. U068
  • dibromo methane
  • Dibromomethane, 99%
  • Dibromomethane, >=99%
  • 4-01-00-00078 (Beilstein Handbook Reference)
  • Dibromomethane, analytical standard
  • Dibromomethane, stabilized with BHT
  • UN 2664
  • Dibromomethane Solution in Methanol, 1000ug/mL

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
Clear, colorless liquidexp.
Melting point
-52.5 °Cexp.
Boiling point
97 °Cexp.
Density
Relative density (water = 1): 2.5exp.
Autoignition temperature
515 °Cexp.
Solubility
11.70 g/1000 g water @ 15 °C, 11.93 g/1000 g water @ 30 °Cexp.
Vapour pressure
40 mm Hg @ 23.3 °Cexp.

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
173.84 g/molcalc.
Exact mass
171.8523 Dacalc.
LogP (octanol/water)
1.73calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H332Harmful if inhaled.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (6)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2664
Transport hazard class
6.1
Packing group
III

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 aid

Dibromomethane suppliers

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All 23 suppliers
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Where suppliers are based

23 suppliers in 5 countries

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Dibromomethane price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Organic synthesis, solvent.

Solvent for fats, waxes, & resins, heavy liquid in solid separations, ingredient of fire extinguishing fluids, gage fluid.

Solvent, as a gauge fluid, and in producing pesticides...can be used as dense, readily volatile media for mineral and salt separations.

Industrial uses: Intermediate, Processing aids not otherwise specified.

Consumer uses: Intermediate.

Pharmacological actions

  • Mutagens

Roles

  • algal metabolite
  • eukaryotic metabolite
  • marine metabolite
  • metabolite

How it is made

Manufactured along with bromochloromethane, from dichloromethane: Lake, Asadorian, US patent 2,553,518 (1951 to Dow).

Prepn: Hartman, Dreger Org Synth Coll Vol 1, 357 (1941)

Reaction of dichloromethane with anhydrous aluminum bromide, treatment with bromine and aluminum, or by reaction with hydrogen bromide in the presence of an aluminum halide catalyst...allowing the reaction to proceed to completion.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 602-003-00-8

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 Dibromomethane is traded under.

HS 2903.69Indicative HS code

Brominated or iodinated derivatives of acyclic hydrocarbons, other

World exports in 2024
$135M
−18.6% vs 2023, imports $139M
2022 to 2024
Top exporters
  1. China26.7%
  2. United States26.3%
  3. Netherlands12.3%
Top importers
  1. United States13.2%
  2. India * partner reported9.6%
  3. Japan9.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Dibromomethane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dibromomethane, based on the data on this page

What is Dibromomethane?

Dibromomethane is a member of the class of bromomethanes that is methane substituted by two bromo groups. It is produced by marine algae. It has a role as a marine metabolite and an algal metabolite. It is a bromohydrocarbon and a member of bromomethanes.

What is the CAS number of Dibromomethane?

The CAS registry number of Dibromomethane is 74-95-3. Other or deprecated CAS numbers: 4371-77-1.

What is the molecular formula and weight of Dibromomethane?

The molecular formula of Dibromomethane is CH2Br2 and its molar mass is 173.84 g/mol.

What is Dibromomethane used for?

Organic synthesis, solvent. Solvent for fats, waxes, & resins, heavy liquid in solid separations, ingredient of fire extinguishing fluids, gage fluid. Solvent, as a gauge fluid, and in producing pesticides...can be used as dense, readily volatile media for mineral and salt separations.

Is Dibromomethane hazardous?

Dibromomethane carries the GHS signal word "Warning". Main hazards: harmful if inhaled, harmful to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dibromomethane?

Dibromomethane is usually classified under HS code 290369 (Brominated or iodinated derivatives of acyclic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dibromomethane?

CompoundList lists 23 suppliers of Dibromomethane in China, India, United States, Canada and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dibromomethane in India?

3 suppliers in India list Dibromomethane on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Dibromomethane?

Suppliers quote Dibromomethane on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dibromomethane

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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