Ethylene (C2H4)
DESCRIPTION (Ethylene):
Ethylene is a colorless, highly flammable gas with a
sweet odor and taste. It is shipped in gaseous form at cylinder pressures of approximately
1200 psig @ 70° F. Typical uses include accelerating the ripening of some fruits, as a
cutting gas, the organic synthesis of some compounds and as an inhalation anesthetic.
PHYSICAL CONSTANTS (Ethylene):
| Molecular Weight: |
28.054 |
| Specific Volume @ 60° F., 1
atm.: |
13.8 cu.ft/lb |
| Boiling Point @ 1.0 atm. : |
-154.66 ° F |
| Freezing Point @ 1 atm. : |
-273.1 ° F |
| Freezing Point @ Saturation
pressure: |
-272.5 ° F |
| Specific Gravity, Gas @ 15°
C., 1 atm. (Air = 1): |
0.9740 |
| Density, Gas @ 0° C., 1 atm.: |
1.260 g/L |
| Density, Liquid @ b.p.: |
0.5674 g/L |
| Critical Temperature: |
49.82 ° F |
| Critical Pressure: |
742.35 psia |
| Critical Density: |
0.228 g/ml |
| Latent Heat of Vaporization @
b.p.: |
115.39 cal/g |
| Latent Heat of Fusion @ m.p..: |
28.547 cal/g |
| Flammable Limits in Air: |
3.1-32% by volume |
| Autoignition Temperature: |
1009 ° F |
| Gross Heat of Combustion @
60° F., 1 atm. |
1608.5 BTU/ft3 |
| Specific Heat, Gas @ 15° C.,
1 atm. Cp: |
0.3622 cal/(g)(° C) |
| Specific Heat, Gas @ 15° C.,
1 atm. Cv: |
0.2914 cal/(g)(° C) |
| Specific Heat Ratio, Gas @
15° C., 1 atm., Cp/Cv: |
1.243 |
| Thermal Conductivity, Gas @
0° C. : |
4.07 x 10-4 cal/(sec)(cm2 )(° C/cm) |
| Viscosity, Gas @ 0° C., 1 atm.
: |
0.0093 centipoise |
CYLINDER CONNECTIONS
(Ethylene):
Standard CGA V-1 Cylinder Connection threaded: CGA 350
Standard CGA V-1 Cylinder Connection yoke: CGA 900
|
