Properties

• Density:

  0.648 g/cm3

• Melting point:

  −102.7 °C(lit.)

• Boiling point:

  −23.2 °C(lit.)

• Flashing point:

  -50 °C

• Vapour pressure:

  204.6 mmHg ( −49.5 °C)

Safety Information

• Symbol:

  

• Signal words:

  Danger

• Hazard statements:

  H220 Extremely flammable gas.

  H280 Contains gas under pressure; may explode if heated.

  H335 May cause respiratory irritation.

• Precautionary statements:

  P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

  P304+P340+P312 IF INHALED:Remove victim to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or doctor/physician if you feel unwell.

  P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.

  P381 Eliminate all ignition sources if safe to do so.

  P410+P403 Protect from sunlight. Store in a well-ventilated place.