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| Product Name: | hydrogen |
| CAS Registry Number: | 9002-84-0 |
| EINECS: | 204-126-9 |
| Synonyms: | Hydrogen ion(1+); Hydrogen(1+) ion; Atomic hydrogen ion; monohydrogen;hydrogen; H-atom; Hydrion;Hydrogen atom; Hydrogen (H+); |
| Molecular Structure: |
 |
| Molecular Weight: | 1.00794 |
| Density: | 2.00 |
| Boiling Point: | 400 ºC |
| Melting Point: | 327 ºC |
| Flash Point: | > 93.3°C (> 200°F) |
| Refractive index: | 1.35 |
| Risk Codes: | S24/25 |
| Safety Statements: | R41:有严重损伤眼睛的危险‖R45; |
| Hazard Symbols: | Xi:刺激性物质‖T; |