Phosphine
hydrogen phosphide, Phosphorated hydrogen, Phosphorus hydride, Phosphorus trihydride
Phosphine
Formula: PH3 | CAS: 7803-51-2
Synonyms: hydrogen phosphide, Phosphorated hydrogen, Phosphorus hydride, Phosphorus trihydride
Phosphine is primarily used in the preparation of semiconductors as an n-type dopant for Si semiconductors, and in preparation of GaP and In P devices. it is used as a fumigant in silos.
Specification
| Specification | Value/Information |
|---|---|
| Formula | PH3 |
| CAS no. | 7803-51-2 |
| Gas Response Factor, 11.7 eV | 1.4 |
| Gas Response Factor, 10.6 eV | 2 |
| Gas Response Factor, 10.0 eV | NA |
| ppm per mg/m⁻³, (20 °C, 1 bar) | 0.659 |
| Molecular Weight, g/mole | 34.0 |
| Melting point, °C | -133 |
| Boiling point, °C | -87.5 |
| Flash point, °C | - |
| Lower Explosive Limit, % | 1.79 |
| Specification | Value/Information |
|---|---|
| Density, g.cm⁻³ | 1.492 |
| Ionisation Energy, eV | 9.96 |
| EH40 STEL, ppm | 0.3 |
| EH40 STEL, mg.m⁻³ | 0.42 |
| NIOSH ST, ppm | 0.3 |
| NIOSH TWA REL, ppm | 0.4 |
| NIOSH ST, mg.m⁻³ | 1 |
| NIOSH TWA REL, mg.m⁻³ | 1 |
| NIOSH IDLH, ppm | 50 |
| OSHA TWA PEL, ppm | 0.3 |
| OSHA TWA PEL, mg.m⁻³ | 0.4 |
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