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Phosphine Structure

Phosphine

Chemical Properties

Melting point -133°
Boiling point −87.5 °C(lit.)
Density  0.491 (estimate)
vapor density  1.15 (vs air)
vapor pressure  3905kPa at 25℃
solubility  insoluble in H2O; slightly soluble in ethanol, ethyl ether
form  colorless gas
color  colorless gas; flammable
Water Solubility  0.26 volumes in H2O (20°C); insoluble hot H2O; slightly soluble alcohol, ether, cuprous chloride solutions [HAW93] [MER06]
Merck  13,7424
Exposure limits TLV-TWA 0.42 mg/m3 (0.3 ppm) (ACGIH and OSHA); STEL 1.4 mg/m3 (1 ppm) (ACGIH); IDLH 200 ppm (NIOSH).
Dielectric constant 2.5(-60℃)
Stability Stable, but pyrophoric - spontaneously flammable in air. Note the very wide explosion limits. Incompatible with oxidizing agents, halogens, nitric acid.
CAS DataBase Reference 7803-51-2(CAS DataBase Reference)
NIST Chemistry Reference Phosphine(7803-51-2)
EPA Substance Registry System Phosphine (7803-51-2)

Safety Information

Hazard Codes  F+,T+,N
Risk Statements  12-17-26-34-50
Safety Statements  28-36/37-45-61-63
RIDADR  UN 2199 2.3
WGK Germany  2
RTECS  SY7525000
DOT Classification 2.3, Hazard Zone A (Gas poisonous by inhalation)
HazardClass  2.3
Hazardous Substances Data 7803-51-2(Hazardous Substances Data)
IDLA 50 ppm

MSDS

Usage And Synthesis

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