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Isotope-labelled compounds

Methane-d2

Also known as dideuteriomethane, Methane-d2 (gas), (~2~H_2_)Methane

CAS 676-55-1Formula CH4Molar mass 18.06 g/molEC 688-580-7
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure
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Methane-d2 chemical structure, CH4, CAS 676-55-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
676-55-1
Formula
CH4
Molar mass
18.06 g/mol
Physical form
Gas
HS code
284590
Category
Isotope-labelled compounds
Illustrative photo, industrial gas cylinders secured with a safety chain in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Methane-d2?

Plain description, key identifiers and synonyms

Methane-d2 is a chemical substance with the molecular formula CH4 and a molar mass of 18.06 g/mol. Its CAS registry number is 676-55-1. The IUPAC name is dideuteriomethane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dideuteriomethane
CAS number
676-55-1 CAS number cross-checked
EC number
688-580-7
Molecular formula
CH4
InChIKey
VNWKTOKETHGBQD-DICFDUPASA-N
InChI
InChI=1S/CH4/h1H4/i1D2
Canonical SMILES
C
Isomeric SMILES
[2H]C[2H]

Synonyms

  • dideuteriomethane
  • Methane-d2 (gas)
  • (~2~H_2_)Methane
  • Methane-d2, 98 atom % D

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

Physical form
Gasexp.

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
18.06 g/molcalc.
Exact mass
18.0439 Dacalc.
LogP (octanol/water)
0.64calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
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
Danger
GHS02: Flammable
Flammable
GHS04: Gas under pressure
Gas under pressure

Hazard statements

  • H220Extremely flammable gas.
  • H280Contains gas under pressure, may explode if heated.
Precautionary statements (8)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P403Store in a well-ventilated place.
  • P410 + P403Protect from sunlight. Store in a well-ventilated place.

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

Methane-d2 suppliers

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Methane-d2 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

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Methane-d2 is traded under.

HS 2845.90Indicative HS code

Compounds, inorganic or organic, of such isotopes, whether or not chemically defined

World exports in 2024
$2.67B
+19.0% vs 2023, imports $1.67B
2019 to 2024
Top exporters
  1. Ireland55.3%
  2. Hong Kong11.8%
  3. United States10.7%
Top importers
  1. China24.3%
  2. Ireland21.9%
  3. South Korea13.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Methane-d2 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Methane-d2, based on the data on this page

What is Methane-d2?

Methane-d2 is a chemical substance with the molecular formula CH4 and a molar mass of 18.06 g/mol. Its CAS registry number is 676-55-1. The IUPAC name is dideuteriomethane.

What is the CAS number of Methane-d2?

The CAS registry number of Methane-d2 is 676-55-1.

What is the molecular formula and weight of Methane-d2?

The molecular formula of Methane-d2 is CH4 and its molar mass is 18.06 g/mol.

What is Methane-d2 used for?

Known uses and roles of Methane-d2 include isotope-labelled compounds in research and laboratory.

Is Methane-d2 hazardous?

Methane-d2 carries the GHS signal word "Danger". Main hazards: extremely flammable gas, contains gas under pressure, may explode if heated. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Methane-d2?

Methane-d2 is usually classified under HS code 284590 (Isotopes other than those of heading 2844, compounds, inorganic or organic, of such…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Methane-d2?

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What is the price of Methane-d2?

Suppliers quote Methane-d2 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 Methane-d2

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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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