NITROUS OXIDE N2O
General Characteristics
Nitrous Oxide is a nontoxic, nonflammable, colorless gas with a slightly sweet taste and odor. The odor is subjective and therefore not reliable, and should not be used to detect the presence of the gas. It is stable and nonreactive under normal conditions, but becomes a strong oxidizing agent at elevated tempertures and pressure. Nitrous Oxide 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
0.1146lb/ft^3 (1.947g/l)
Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm
8.73ft^3/lb (0.514l/g)
Boiling Point @ 1 atm
-127.4&degF (-88.5&degC)
Melting Point @ 1 atm
-131.5&degF (-90.81&degC)
Critical Temperature
97.6&degF (36.4&degC)
Critical Pressure
1053 psia (72.6 bar)
Toxicity
PEL /TLV
50 ppm