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Sulfur and phosphorus compounds

Methanedithiol

Also known as Dimercaptomethane, dithiomethane, Methane dithiol

CAS 6725-64-0Formula CH4S2Molar mass 80.18 g/molEC 639-192-1
GHS signal word: Warning. Pictograms: Flammable
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Methanedithiol chemical structure, CH4S2, CAS 6725-64-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
6725-64-0
Formula
CH4S2
Molar mass
80.18 g/mol
EC number
639-192-1
HS code
293090
Category
Sulfur and phosphorus compounds

What is Methanedithiol?

Plain description, key identifiers and synonyms

Methanedithiol is a chemical substance with the molecular formula CH4S2 and a molar mass of 80.18 g/mol. Its CAS registry number is 6725-64-0.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methanedithiol
CAS number
6725-64-0 CAS number cross-checked
EC number
639-192-1
Molecular formula
CH4S2
UNII
LSC543N4PH
InChIKey
INBDPOJZYZJUDA-UHFFFAOYSA-N
InChI
InChI=1S/CH4S2/c2-1-3/h2-3H,1H2
SMILES (canonical and isomeric)
C(S)S

Synonyms

  • Dimercaptomethane
  • dithiomethane
  • Methane dithiol
  • dithiocarbon

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
80.18 g/molcalc.
Exact mass
79.9754 Dacalc.
LogP (octanol/water)
0.8calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
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
GHS02: Flammable
Flammable

Hazard statements

  • H226Flammable liquid and vapour.
Precautionary statements (11)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

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

Methanedithiol suppliers

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Methanedithiol 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

Functional uses

  • Flavouring and nutrient

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 Methanedithiol is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Methanedithiol?

Methanedithiol is a chemical substance with the molecular formula CH4S2 and a molar mass of 80.18 g/mol. Its CAS registry number is 6725-64-0.

What is the CAS number of Methanedithiol?

The CAS registry number of Methanedithiol is 6725-64-0.

What is the molecular formula and weight of Methanedithiol?

The molecular formula of Methanedithiol is CH4S2 and its molar mass is 80.18 g/mol.

What is Methanedithiol used for?

Known uses and roles of Methanedithiol include flavouring and nutrient.

Is Methanedithiol hazardous?

Methanedithiol carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Methanedithiol?

Methanedithiol is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Methanedithiol?

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What is the price of Methanedithiol?

Suppliers quote Methanedithiol 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 Methanedithiol

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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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