High Purity Cryogenic liquids are liquefied gases that are kept in their liquid state at very low temperatures. Cryogenic liquids have boiling points below -150°C (- 238°F) All cryogenic liquids are gases at normal temperatures and pressures. These gases must be cooled below room temperature before an increase in pressure can liquefy them. Different cryogens become liquids under different conditions of temperature and pressure, but all have two properties in common: they are extremely cold, and small amounts of liquid can expand into very large volumes of gas.
Hydrogen
UN 1966
Purity Offering: 99.999%
Temperature: -423 F
scf per Gallon: 113.4 scf/gallon
Pounds per Gallon: .5906 pounds
Helium
UN 1963
Purity Offering: 99.99%
Temperature: -452 F
scf per Gallon: 100.8 scf/gallon
Pounds per Gallon: 1.0423 pounds
LNG
UN 1972
Purity Offering: 95% - 99.5%
Temperature: -260 F
scf per Gallon: 87 scf/gallon
Pounds per Gallon: 3.49 pounds
Argon
UN 1951
Purity Offering: 99.998% - 99.9999%
Temperature: -302 F
scf per Gallon: 112.5 scf/gallon
Pounds per Gallon: 11.63 pounds
Ethylene
UN 1038
Purity Offering: 99.9%
Temperature: -154 F
scf per Gallon: 64.52 scf/gallon
Pounds per Gallon: 4.71 pounds
Nitrogen
UN 1977
Purity Offering: 99.99% - 99.9995%
Temperature: -320 F
scf per Gallon: 93.11 scf/gallon
Pounds per Gallon: 6.745 pounds
Oxygen
UN 1073
Purity Offering: 99.8% - 99.99%
Temperature: -297 F
scf per Gallon: 115.1 scf/gallon
Pounds per Gallon: 9.52 pounds
