REACH

Methane

CAS Number
74-82-8
EC Number
200-812-7

What is Methane?

Methane (CAS 74-82-8) is the primary component of natural gas and a key energy feedstock in global industry. Also known commercially as CH₄.

Where is Methane used?

  • Oil and gas: dominant fuel for power generation, industrial heating, pipeline gas distribution
  • Chemical feedstock: starting material for acetylene, chloromethanes and downstream petrochemical intermediates
  • Steam methane reforming yields hydrogen and synthesis gas, feeding ammonia and methanol production at scale
  • LNG enables long-distance energy transport where pipelines are unavailable
  • High-purity grades serve laboratory, calibration and specialty industrial applications

Good to know: Pipeline-grade natural gas is predominantly methane and must meet standard transmission specifications governing BTU content and impurity limits.

Commercial specifications

  • High-purity grades for laboratory and calibration use

Other Names (Synonyms)

tetrahydrogen monocarbide|methyl hydride|CH₄|Carbane|marsh gas|gaseous signaling molecule|nonessential gasotransmitter|gasocrine signal

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What are the physical properties of Methane?

Melting Point -182.6 °C
Boiling Point -161.4 °C
Density 3.40 x 10⁻³ g/cm³ (vapor) @ Press: 1500 Torr
Flash Point -188 °C
Appearance Methane is an odorless, colorless gas.
Odor odorless
Form gas
Water Solubility 24.4mg/L(25 ºC)
Refractive Index 1.0004

How is Methane classified and handled safely? Learn More

Danger
GHS02· Flammable GHS04· Compressed Gas

Hazard Statements

H220 Extremely flammable gas [Danger Flammable gases]
H280 Contains gas under pressure; may explode if heated [Warning Gases under pressure]
H281 Contains refrigerated gas; may cause cryogenic burns or injury [Warning Gases under pressure]

Which trade and regulatory codes apply to Methane?

UN Number 1971
ADR Class 2.1
Storage Class 2A - Gases
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