METHANE (refrigerated liquid)

UN Number: 1972

Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


UN number 1972

Physical chemical data

Physical State (20°C) Gas
Density (kg/m3)
0.774 [Kg/m³] at a temperature of 20°C
Density of gas (kg/m3) 0.774
Boiling Point (°C) -161
Melting Point (°C) -183
Vapour Pressure (Pa)
25000000 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 537
Upper explosivity limit (UEL) (volume %) 15

Behaviour at sea

Additional data

Colour colourless
Odour weak odour

Transportation data

Transport mode Gas,Packaged
Ship type 2G
Cargo group 31
State liquefied gas
Temperature (°C) < -162�
Pressure (Pa) under pressure
Family name paraffins
IMO class 2(2.1)

Reactivity data

Water No
Static electricity Yes

GESAMP Hazard profile

Human toxicity threshold

TEEL-1 (mg/m3) 3000 ppm
TEEL-2 (mg/m3) 5000 ppm
TEEL-3 (mg/m3) 200000 ppm


Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 115

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 2-10


Emergency procedures


Due to low temperature, SPILLAGE may damage ship's construction.
Avoid all sources of ignition (e.g. naked lights, unprotected light bulbs, electric handtools).
Avoid all contact, even when wearing protective clothing. Do not direct water jet straight onto the spill.

Spillage on deck

Stop leak if practicable. Use water jets from as far away as practicable to accelerate evaporation, not directing them straight onto the spill. Ensure that direction of jet does not drive liquid towards the emergency team, into confined areas or near ignition sources. Do not direct water jet at vent discharge piping.

Spillage under deck

Provide adequate ventilation. Adopt action as for "On deck".

Fire on deck

Use copious quantities of water as far away as practicable to cool surroundings and adjacent receptacles. When possible, remove undamaged cooled receptacles to a safe place.

Fire under deck

Batten down; use ship's fixed fire-fighting installation. Otherwise adopt action as for "On deck".

Special equipment to be carried

Suitable protective clothing (gloves, boots, coveralls, headgear).
Self-contained breathing apparatus.

Remarks by UN no.

Flames may be invisible.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2023-01-16T14:32:46+00:00

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