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.