Molecular Weight

70.01

Flammability Limits in air

Nonflammable

Specific Gravity,
Gas @ 70&degF(21.1&degC),
1 atm(Air=1)

2.430

Density,
Gas @ 70&degF
(21.1&degC), 1 atm

0.182lbs/ft^3 (2.91g/l)

Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm

5.5ft^3/lb (0.344ml/g)

Boiling Point @ 1 atm

-115.6&degF (-82.0&degC)

Melting Point @ 1 atm

-247.4&degF (-155.2&degC)

Critical Temperature

78.3&degF (25.7&degC)