Helium

Helium is a colorless, odorless and tasteless inert gas which has no toxic properties. A member of the rare gas chemical family, it is 1/7 as heavy as air. Liquid Helium at -452ºF is the coldest liquefied gas.

The Compressed Gas Association (CGA) specification G-9.1-1992, Type I, Grade D is considered the commercial gaseous helium standard.

Certificate of Conformance


Helium Conversion Data

Helium
Weight
Gas
Liquid
Pounds

Kilograms

Cubic Feet
Cubic Meters
Gallons
Liters
Lb
Kg
SCF
Sm3
Gal
L
1 Pound
1
0.4536
96.71
2.736
0.9593
3.631
1 Kilogram
2.205
1
213.2
6.039
2.115
8.006
1 SCF Gas
0.0103
0.00469
1
0.02832
0.009919
0.03754
1 Sm3 Gas
0.3651
0.1656
35.31
1
0.3504
1.3257
1 Gal Liquid
1.0423
0.4728
100.8
2.854
1
3.785
1 L Liquid
0.2754
0.1249
26.63
0.7542
0.2642
1

SCF (standard cubic foot) and SM3 (standard cubic meter) gas measured at 1 atmosphere and 70ºF.

Liquid measured at 0ºF and saturated pressure.

Nm3 (normal cubic meter) gas measured at 1 atmosphere and 0ºC.

All values round to the nearest 4/5 significant numbers.