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/L |
| 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
|
