Phosphine

hydrogen phosphide, Phosphorated hydrogen, Phosphorus hydride, Phosphorus trihydride

How to detect 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

SpecificationValue/Information
FormulaPH3
CAS no.7803-51-2
Gas Response Factor, 11.7 eV1.4
Gas Response Factor, 10.6 eV2
Gas Response Factor, 10.0 eVNA
ppm per mg/m⁻³, (20 °C, 1 bar)0.708
Molecular Weight, g/mole34.0
Melting point, °C-133
Boiling point, °C-87.5
Flash point, °C-
Lower Explosive Limit, %1.79
Density, g.cm⁻³1.492
SpecificationValue/Information
Ionisation Energy, eV9.96
EH40 TWA, ppm0.1
EH40 TWA, mg.m⁻³0.14
EH40 STEL, ppm0.3
EH40 STEL, mg.m⁻³0.42
NIOSH ST, ppm1
NIOSH TWA REL, ppm0.3
NIOSH ST, mg.m⁻³1
NIOSH TWA REL, mg.m⁻³0.4
NIOSH IDLH, ppm50
OSHA TWA PEL, ppm0.3
OSHA TWA PEL, mg.m⁻³0.4

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