Methane

General

Molecular formula

CH4

Main hazard

Extremely flammable (F+)

Autoignition temperature

537 C

Explosion limits

5 – 15%

Appearance

Colourless gas

Molar mass

16,0425 g/mol

Properties

Density

0,717 g/L (lighter than air)

Solubility in water

3,5 mg/100 mL

Melting point

-182,5 C (90,6 K)

Boiling point

-161,6 C (111,55 K)

Health

4 – Deadly

3 – Extreme danger

2 – Hazardous

1 – Slightly hazardous

0 – Normal materials

Fire

4 – Very Flammable

3 – Readily Ignitable

2 – Ignited with heat

1 – Combustible

0 – Will not burn

Reactivity

4 – May detonate

3 – Shock & heat may detonate

2 – Violent chemical change

1 – Unstable if heated

0 – Stable

Specific Hazard

OXE - Oxidizer

ACID - Acid

ALK - Alkali

COR - Corrosive

W – Use no water