HazMat Tool — substance information

Methane, compressed or Natural gas, compressed (with high methane content)

HMT May 2026
UN / ID
UN 1971
Hazard class
2.1
Packing group
ERG guide
ERG 115
Special provisions
Source
49 CFR §172 (2026/05)

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Methane, compressed or Natural gas, compressed (with high methane content)


Methane (US: METH-ayn, UK: MEE-thayn) is a chemical compound that has the chemical formula CH4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The abundance of methane on Earth makes it an economically attractive fuel, although capturing and storing it is difficult because it is a gas at standard temperature and pressure. In the Earth's atmosphere methane is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. Wikipedia

Substance Data

Source: PubChem (HSDB, 23.11.2019)

CAS-Number

74-82-8

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 115

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

2.1
Flammable gases

(4) Identification number Help

UN 1971

(5) Packing Group Help

n/a

(6) Labels Help

Flammable gases (2.1) Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions306see 49 CFR §173.306
(8B) Non-bulk302see 49 CFR §173.302
(8C) Bulk302see 49 CFR §173.302

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only150 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.

Similar substances

UN / IDProper shipping nameHazard class
UN 1973Chlorodifluoromethane and chloropentafluoroethane mixture or Refrigerant gas R 502 with fixed boiling point, with approximately 49 percent chlorodifluoromethane2.2
UN 2599Chlorotrifluoromethane and trifluoromethane azeotropic mixture or Refrigerant gas R 503 with approximately 60 percent chlorotrifluoromethane2.2
UN 2602Dichlorodifluoromethane and difluoroethane azeotropic mixture or Refrigerant gas R 500 with approximately 74 percent dichlorodifluoromethane2.2
UN 1972Methane, refrigerated liquid (cryogenic liquid) or Natural gas, refrigerated liquid (cryogenic liquid, with high methane content)2.1
UN 3070Ethylene oxide and dichlorodifluoromethane mixture, with not more than 12.5 percent ethylene oxide2.2
UN 3151Polyhalogenated biphenyls, liquid or Halogenated monomethyldiphenyl-methanes, liquid or Polyhalogenated terphenyls, liquid9
UN 3152Polyhalogenated biphenyls, solid or Halogenated monomethyldiphenyl-methanes, solid or Polyhalogenated terphenyls, solid9
UN 1974Chlorodifluorobromomethane or Refrigerant gas R 12B12.2
UN 1018Chlorodifluoromethane or Refrigerant gas R 222.2
UN 1022Chlorotrifluoromethane or Refrigerant gas R 132.2
UN 1028Dichlorodifluoromethane or Refrigerant gas R 122.2
UN 3252Difluoromethane or Refrigerant gas R 322.1
UN 1982Tetrafluoromethane or Refrigerant gas R 142.2
UN 1984Trifluoromethane or Refrigerant gas R 232.2
UN 1009Bromotrifluoromethane or Refrigerant gas, R 13B1.2.2