Methylphosphine is the simplest organophosphorus compound with the formula CH3PH2, often written MePH2. It is a malodorous gas that condenses to a colorless liquid. It can be produced by methylation of phosphide salts:[1]
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Other names
Methylphosphane
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3D model (JSmol)
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ChEBI |
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ChemSpider |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
CH3PH2 | |
Molar mass | 48.02 |
Appearance | colorless gas |
Boiling point | −17.1 °C (1.2 °F; 256.0 K) |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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toxic |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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The compound exhibits the properties characteristic of a primary phosphine, i.e., a compound of the type RPH2. It can be oxidized to methylphosphonous acid:
It protonates to give the phosphonium ion:
With strong bases, it can be deprotonated to give methylphosphide derivatives: