Hydrogen
CAS: 1333-74-0
Category: Inorganic Chemicals
| Purity | Industrial Grade ≥99.5%, High Purity Grade ≥99.999%, Ultra High Purity Grade ≥99.9999% |
| Molecular Formula | H2 |
| Molecular Weight | 2.016 |
| Appearance | Colorless, odorless, and tasteless gas under normal conditions |
| Packaging | 40 L steel gas cylinder, 47 L high-pressure cylinder, tube trailer, or liquid hydrogen storage tank for large-scale applications |
| Testing Indicators | Purity — Gas chromatography with thermal conductivity detector (GC-TCD); Oxygen and argon content — GC analysis; Moisture — Dew point measurement / Karl Fischer titration; Nitrogen content — GC analysis; Hydrocarbon impurities — GC-FID; Carbon monoxide and carbon dioxide — Infrared absorption analysis; Hydrogen sulfide — Gas detection method; Pressure — Pressure gauge verification; Identification — Flame test or thermal conductivity detection. |
| Storage Notes | Store in a cool, dry, well-ventilated area away from heat sources, sparks, flames, and ignition sources. Hydrogen cylinders must be stored upright, secured, and protected from physical damage. Keep containers tightly closed and use only approved pressure equipment. Separate from oxidizing gases such as oxygen and chlorine. Ensure proper grounding and ventilation during handling. |
| Lead Time | 10 days |
Hydrogen is a widely used industrial gas with excellent reducing properties and high energy density. It is primarily used in petroleum refining (hydrodesulfurization and hydrocracking), ammonia synthesis, methanol production, hydrogenation of oils and chemicals, semiconductor manufacturing, metal heat treatment, welding and cutting processes, fuel cells, and as a clean energy carrier. High-purity hydrogen is also used in analytical instruments and laboratory applications.