CARBON DIOXIDE CO2
General Characteristics
Carbon dioxide is a colorless, odorless, nontoxic and nonflammable gas. It is slightly acidic. It is shipped as a liquefied gas under its own vapor pressure.
Physical Information
Molecular Weight
44.01
Flammability Limits in air
Nonflammable
Specific Gravity,
Gas @ 70&degF(21.1&degC),
1 atm(Air=1)
1.53
Density,
Gas @ 70&degF
(21.1&degC), 1 atm
0.1144lbs/ft^3 (1.832g/l)
Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm
8.70ft^3/lb (0.543l/g)
Freezing Point @ 75.1 psia
(518 kPa)
-69.83&degF (-56.57&degC)
Sublimation Point @ 1 atm
-110.0&degF (-78.8&degC)
Triple Point @ 5.11 atm
-69.9&degF (-56.6&degC)
Critical Temperature
87.9&degF (31.0&degC)
Critical Pressure
1070.8 psia (73.83 bar)
Toxicity
STEL
30000 ppm
TLV-TWA
5000 ppm
TCLo (Inhalation Human) pulmonary effects
2000 ppm
LCLo RAT, 15 minutes
657190 ppm