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Hydrogen(H2)
| Item |
Purity Specification % |
| Hydrogen(H2) |
≥99.99 |
≥99.999 |
≥99.9999 |
| Impurities(ppm) |
Oxygen(O2) |
≤5 |
≤1 |
≤0.2 |
| Nitrogen(N2) |
≤60 |
≤5 |
≤0.4 |
| Moisture(H2O) |
≤30 |
≤3 |
≤1 |
| Carbon Dioxide(CO2) |
≤5 |
≤1 |
≤0.1 |
| Carbon Monoxide(CO) |
≤5 |
≤1 |
≤0.1 |
| Methane(CH4) |
≤10 |
≤1 |
≤0.2 |
| Package: Using 40Liter GB standard cylinder Pressure:13.5MPa. Can also be filled with other specifications cylinders. |
Main use: Gaseous fuel, petroleum refinement, manufacturing grease, harden oil etc. butter, methyl alcohol, hydrochloric acid, ammonia...etc. Cut of welding and metal , the weather prognosticates, melting of glass , metallurgy industry, coolant( liquid hydrogen), the semi-conductor manufacturing uses the equilibrium gas, the eclipse engraves gas, standard gas, zero point gas and correct gas, heat oxidize, spread outside, Polycrystalline silicon ， the ion infuses into, carries to flow, burn knot etc. Physics and chemistry nature:
| Molecular weight ：2.0159 |
melting Point： (101.325kPa)：-259.2℃ |
| Boiling point：(101.325kPa)：-252.8℃ |
Liquid density：(-252.766℃，101.325kPa)：70.973kg/m3 |
| gas density ：(0℃，101.325kPa)：0.0899kg/m3 |
Opposite density：(25℃，101.325kPa， Air=1)：0.0695 |
| Specific volume (21.1℃，101.325kPa)：11.9674m3/kg |
Critical temperature ：-239.9℃ |
| Critical pressure ：1297kPa |
Critical density ：31.0kg/m3 |
| Melt heat (13.8K)：58.16kJ/kg |
Heat of vaporizatio (18K)：457.80kJ/kg |
| Specific heat volume：(101.325kPa，273.15K)：Cp=14190J/(kg·K) |
Cv=10080J/(kg·K) |
| ratio heat ratio：(26.8℃，101.325kPa)：Cp/Cv=1.405 |
Viscidity：(101.325kPa,25℃)：0.00886mPa·s |
| The steam pressure (16K)：21kPa (24K)：260kPa (32K)：1100kPa |
| - Surface tension ( Liquid - gas interface ，-258℃)：2.80mN/m |
Heat conduction coefficient：(100kPa，270K)：0.16705W/(m·K) |
| Flammable range in the air：(20℃，101.325kPa)：4.0～74.5% |
The lowest ignition poin in the air： (101.325kPa)：570℃ |
| Flame temperature when equivalent to burn in the air ：1430℃ |
The largest flame speed when equivalent burn in the air ：2.65m/s |
| Flammable range in the oxygen (20℃,101.325kPa)：4.0～94% |
The lowest ignition poin in the oxygen ：(101.325kPa)：560℃ |
| lame temperature when equivalent to burn in the oxygen ：2830℃ |
The largest flame speed when equivalent burn in the oxygen ：14.36m/s |
| Burn heat when equivalent burn in the oxygen ：12761J/m3(high) 11506J/m3(low) |
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