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General Characteristics

Oxygen is a colorless, odorless, highly oxidizing gas that sustains life and vigorously supports combustion. Oxygen should not be permitted to contact oil, grease or other combustible materials. As such, all equipment used with Oxygen must be specially cleaned. It is shipped in steel cylinders under high pressure.

Physical Information

Molecular Weight

32.00

Flammability Limits in air

Nonflammable

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

1.11

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

0.0828lb/ft^3 (1.326g/l)

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

12.08ft^3/lb (0.754l/g)

Boiling Point @ 1 atm

-297.35&degF (-182.97&degC)

Melting Point @ 1 atm

-361.84&degF (-118.57&degC)

Critical Temperature

-181.1&degF (-118.4&degC)

Critical Pressure

737.1 psia (50.83 bar)

Toxicity

>75% causes hyperoxia