CONCOA Precision Gas Controls

Phosphine (PH3)
DESCRIPTION (Phosphine):


Phosphine is a colorless, flammable, toxic gas with a fish like odor. Typical uses are as a doping gas in the semi-conductor industry.

PHYSICAL CONSTANTS (Phosphine):

Molecular Weight: 34.00
Vapor Pressure @ 70° F.: 592.7 psig
Specific Volume @ 70° F., 1 atm.: 11.4 cu.ft/lb
Boiling Point @ 1.0 atm. : -125.93 ° F
Freezing Point @ 1 atm. : -208.8 ° F
Specific Gravity, Gas @ 20° C., 1 atm. : 1.146
Density, Liquid @ -90 ° C: 0.746 g/ml
Critical Temperature: 124.34 ° F
Critical Pressure: 948.15 psia
Latent Heat of Sublimation: 3.489 kcal/mol
Latent Heat of Fusion @ m.p. 0.270 kcal/mol
Specific Heat of Gas @ 25° C, 1 atm.: CP 0.261 cal/(g)(° C)
Solubility in Water @ 17° C., 1 atm. : 26cc/100cc water

CYLINDER CONNECTIONS (Phosphine):

Standard CGA V-1 Cylinder Connection: CGA 350
Standard CGA V-1 Cylinder Connection Ultra High Integrity: CGA 632