CONCOA Precision Gas Controls

Hydrogen Sulfide (H2S)
DESCRIPTION (Hydrogen Sulfide):


Hydrogen sulfide is a colorless, flammable gas with an offensive odor. It is a considered a toxic gas shipped in steel cylinders as a liquefied gas under it's own vapor pressure of approximately 250 psig @ 70° F. Typical it is used as a reagent for chemical analysis, an additive for oils and in the preparation of metallic sulfides.

PHYSICAL CONSTANTS (Hydrogen Sulfide):

Molecular Weight: 34.08
Vapor Pressure @ 70° F.: 252 psig
Specific Volume @ 70° F., 1 atm.: 11.23 cu.ft/lb
Boiling Point @ 1.0 atm. : -76.6° F
Freezing Point @ 1 atm. : -121.9° F
Triple Point @ Saturation pressure: -113.4° F
Specific Gravity, Gas @ 15° C, 1 atm. (Air = 1): 1.1895
Density, Gas @ 0° C., 1 atm.: 1.5392 g/l
Density, Liquid @ b.p..: 0.993 g/ml
Critical Temperature: 212.7° F
Critical Pressure: 1309 psia
Critical Density: 0.349 g/ml
Latent Heat of Vaporization @ b.p.: 4.463 kcal/mol
Latent Heat of Fusion @ m.p.: 568 cal/mol
Flammable Limits in Air: 4.3-45% by volume
Autoignition Temperature: 500° F
Specific Heat, Gas @ 25° C., 1 atm. Cp: 0.240 cal/(g)(° C)
Specific Heat, Gas @ 25° C., 1 atm. Cv: 0.181 cal/(g)(° C)
Specific Heat Ratio, Gas @ 25° C., 1 atm., Cp/Cv: 1.32
Thermal Conductivity, Gas @ 0° C. : 3.04 x 10-4 cal/(sec)(cm2)( ° C/cm)
Viscosity, Gas @ 32° F, 1 atm. : 0.01166 centipoise
Solubility in Water @ 0° C., 1 atm. : 0.672 g/100 ml H2O

CYLINDER CONNECTIONS (Hydrogen Sulfide):

Standard CGA V-1 Cylinder Connection: CGA 330
Standard CGA V-1 Cylinder Connection Ultra High Integrity: CGA 722