Hydrogen CAS#: 1333-74-0; ChemWhat Code: 18009
Names & Identifiers |
| Product Name | Hydrogen |
| Synonyms | Dihydrogen;H2;hydrogen,compressed;hydrogen,highpurity;hydrogen,refrigeratedliquid(cryogenicliquid);hydrogengas;Molecular hydrogen;molecularhydrogen |
| CAS Registry Number | 1333-74-0 |
| Molecular Formula | H2 |
| Molecular Weight | 2.02 |
| EINECS | 215-605-7 |
| Other Registry Numbers | ; |
| IUPA Names, InChI, InChI Key, Canonical SMILES, etc.: | IUPA Names, InChI, InChI Key, Canonical SMILES, etc. |
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Chemical & Physical Properties |
| Melting point | −259.2 °C(lit.) |
| Boiling Point | −252.8 °C(lit.) |
| Density | 0.0899 |
| vapor Density | 0.07 (21 °C, vs air) |
| Flash Point | <-150°C |
| pka | 35(at 25℃) |
| Explosive Limit | 74.2% |
| Water Solubility | 0.00017 g/100 mL |
| Merck | 13,4813 |
| Stability: | Stable. Highly flammable. Readily forms explosive mixtures with air. Upper (U.K.) composition limit for use of a nitrogen/hydrogen mixture in the open lab is 5.7% hydrogen. |
| More Properties From PubChem | Topological Polar Surface Area, Monoisotopic Mass, etc. |
| NIST Chemistry Reference | Hydrogen(1333-74-0) |
| EPA Substance Registry System | Hydrogen(1333-74-0) |
Safety & Hazards(Codes & Phrases) |
| Hazard Codes | F+ |
| R Phrase | 12 |
| S Phrase | 9-16-33 |
| RIDADR | UN 1950 2.1 |
| WGK Germany | – |
| RTECS | MW8900000 |
| F | 4.5-31 |
| Storage Class | 2.1 |
| Hazardous Substances Data | 1333-74-0(Hazardous Substances Data) |
| More Safety & Hazards From PubChem | Signal, GHS Hazard Statements, Precautionary Statement Codes, etc. |
Literature |
| Literature on PubChem | Synthesis References, Metabolite References, etc. |
Patents |
| Patents on PubChem | Related Patents Of This Product |
Transportation, Storage & Usage |
| Transportation | No Information |
| Storage | No Information |
| Usage | No Information |
Spectral Properties |
| No Information |
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