Hydrogen
is the lightest gas known. It is a colorless, odorless
and tasteless gas and is flammable and nontoxic at
atmospheric temperatures and pressures.
The Compressed Gas Association
(CGA) specification G-5.3 is the industry standard.
Type II, Grade A is considered commercial liquid
hydrogen and Type I, Grade B is considered commercial
gaseous hydrogen.
Hydrogen
(Units in ppm (v/v) unless show otherwise)
* For vaporized liquid, the typical analyses are
Hydrogen, 99.995%; O2/Ar, 1.0 ppm; N2/Total Hydrocarbons,
9.0 ppm; CO2/CO, 1.0 ppm.
** Includes water
Keen guarantees commercial grade product delivered
as a liquid meets the commercial CGA specification
listed. Keen does not normally guarantee commercial
grade product delivered as a compressed gas meets
the gaseous specification listed because gas purities
are affected by normal cylinder filling practices
and process procedures which may compromise the
integrity of the product.
Hydrogen
Conversion Data
|
Hydrogen
|
Weight |
Gas |
Liquid |
| Pounds |
Kilograms |
Cubic
Feet |
Cubic
Meters |
Gallons |
Liters |
Lb |
Kg |
SCF |
Nm3 |
Gal |
L |
| 1 Pound |
1 |
0.4536 |
192 |
5.047 |
1.6928 |
6.408 |
| 1 Kilogram |
2.205 |
1 |
423.3 |
11.126 |
3.733 |
14.128 |
| 1 SCF
Gas |
0.005209 |
0.002363 |
1 |
0.02628 |
0.00882 |
0.03339 |
| 1 Nm3
Gas |
0.19815 |
0.08988 |
38.04 |
1 |
0.3355 |
1.2699 |
| 1 Gal
Liquid |
0.05906 |
0.2679 |
113.41 |
2.981 |
1 |
3.785 |
| 1 L
Liquid |
0.15604 |
0.07078 |
29.99 |
0.7881 |
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.
