Acetylene (C2H2)
DESCRIPTION (Acetylene):
Pure Acetylene is a colorless, highly flammable gas
with an ethereal odor. Commercial acetylene will have a garlic-like odor. It is shipped
with dissolved acetone in its gaseous form. Typical uses oxyacetylene welding and chemical
synthesis.
PHYSICAL CONSTANTS
(Acetylene):
| Molecular Weight: |
26.038 |
| Vapor Pressure of pure liquid
@ 70° F.: |
635 psig |
| Specific Volume @ 60° F., 1
atm.: |
14.463 cu.ft/lb |
| Boiling Point @ 1.22 atm. : |
-103° F |
| Sublimation Point @ 1 atm. : |
-119.2° F |
| Triple Point @ Saturation
pressure: |
-113.4° F |
| Specific Gravity, Gas @ 60°
F., 1 atm. (Air = 1): |
0.9057 |
| Density, Gas @ 0° C., 1 atm.: |
1.1709 g/l |
| Critical Temperature: |
97.3° F |
| Critical Pressure: |
905.5 psia |
| Critical Density: |
0.231 g/ml |
| Latent Heat of Sublimation @
-119.2° F.: |
193.46 cal/mol |
| Latent Heat of Fusion @ t.p.: |
23.04 cal/g |
| Flammable Limits in Air: |
2.5-81.0% by volume |
| Autoignition Temperature: |
635° F |
| Gross Heat of Combustion @
60° F., 1 atm. |
1483.8 BTU/ft3 |
| Specific Heat, Gas @ 25° C.,
1 atm. Cp: |
0.4047 BTU/lb.° F |
| Specific Heat, Gas @ 25° C.,
1 atm. Cv: |
0.3212 BTU/lb.° F |
| Specific Heat Ratio, Gas @
25° C., 1 atm., Cp/Cv: |
1.26 |
| Thermal Conductivity, Gas @
0° C. : |
0.01169 BTU/hr ft2° F/ft |
| Viscosity, Gas @ 25° C., 1
atm. : |
0.00943 centipoise |
| Entropy, Gas @ 25° C., 1 atm.
: |
48.004 cal/mol° C |
| Solubility in Water @ 0° C.,
1 atm. : |
1.7 volumes/volume H2O |
CYLINDER CONNECTIONS
(Acetylene):
Standard CGA V-1 Cylinder Connection: CGA 510
|
