CONCOA Precision Gas Controls

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/ml
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