CONCOA Precision Gas Controls

Arsine (AsH3)
DESCRIPTION (Arsine):


At room temperature and atmospheric pressure, Arsine is a colorless, toxic gas with a garlic-like odor. It's most common use is as a doping gas for the preparation of semi-conductor materials.

PHYSICAL CONSTANTS (Arsine):

Molecular Weight: 77.946
Vapor Pressure of pure liquid @ 70° F.: 205 psig
Specific Volume @ 70° F., 1 atm.: 5.0 cu.ft/lb
Boiling Point @ 1.0 atm. : -80.46° F
Triple Point @ 1 atm. : -178.4° F
Specific Gravity, Gas @ 0° C., 1 atm. (Air = 1): 2.695
Density, Gas @ 0° C., 1 atm: 3.48 g/l
Density, Liquid @ -64.3° C: 1.6040 g/ml
Critical Temperature: 211.8° F
Heat Capacity, Cp, Gas @ 25° C, 1 atm 9.207 cal/mol ° C
Heat of Vaporization @ b.p. 589.4 cal/g
Heat of Fusion @ t.p. 3.67 cal/g
Solubility in Water @ 0° C., 1 atm. : 20cc/100cc water

COMPATIBLE MATERIALS (Arsine):

Iron and steel piping, connections and accessories are recommended for any equipment used for the thermal decomposition of Arsine.

CYLINDER CONNECTIONS (Arsine):

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