ARGON Ar
General Characteristics
Argon is a colorless, odorless, nontoxic, nonflammable gas that is heavier than air. It is shipped in steel cylinders under high pressure.
Physical Information
Molecular Weight
39.95
Flammability Limits in air
Nonflammable
Specific Gravity,
Gas @ 70&degF(21.1&degC),
1 atm(Air=1)
1.38
Liquid Density @ Boiling Point
86.95lbs/ft^3 (1392.8g/l)
Density,
Gas @ 70&degF
(21.1&degC), 1 atm
0.1034lbs/ft^3 (1.656g/l)
Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm
9.7 ft^3/lb (0.604l/g)
Boiling Point @ 1 atm
-302.55&degF (-185.86&degC)
Melting Point @ 1 atm
-308.6&degF (-189.2&degC)
Critical Temperature
-188.5&degF (-122.5&degC)
Critical Pressure
705.6 psia (48.66 bar)
Toxicity
Non-Toxic, asphyxiant only