-207 °F (EPA, 1998)
-133.8 °C
-132.5 °C
-133 °C
-209 °F
Boiling Point
-126 °F at 760 mmHg (EPA, 1998)
-87.75 °C
-87.7 °C
-126 °F
Density
0.746 at -130 °F (EPA, 1998) - Less dense than water; will float
1.390 g/L at 25 °C
Density: 1.529 g/L at 0 °C
Density (gas): 1.53 kg/m³
Relative density (water = 1): 0.8
Physical Description
Phosphine appears as a colorless gas with a disagreeable odor of fish or garlic. Boiling point -126 °F; freezing point -209 °F. Very toxic by inhalation at extremely low concentrations. Prolonged heating may cause containers to rupture violently and rocket. Rate of onset: Immediate & Delayed (Lungs) Persistence: Minutes - hours Odor threshold: 0.9 ppm Source/use/other hazard: Insecticide; used in manufacture of flame retardants and incendiaries.
Gas or Vapor
Colorless gas with a fish- or garlic-like odor. [pesticide] [Note: Shipped as a liquefied compressed gas. Pure compound is odorless.] [NIOSH] Vapor density = 1.17 (heavier than air); [Burke, p. 102]
Liquid
COLOURLESS COMPRESSED LIQUEFIED GAS.
Appearance
Colorless gas; flammable
Colorless gas [Note: Shipped as a liquefied compressed gas].