CONCOA Precision Gas Controls

Methane (CH4)
DESCRIPTION (Methane):


Methane is a colorless, odorless, tasteless, flammable gas. It is the major component of Natural gas. Typical uses of Methane are as a test gas for systems designed to use Natural gas as a fuel. Also, it is used for the production of Ammonia and Acetylene.

PHYSICAL CONSTANTS (Methane):

Molecular Weight: 16.043
Specific Volume @ 70° F., 1 atm.: 23.7 cu.ft/lb
Freezing Point @ 1 atm. : -296.7° F
Boiling Point @ 1 atm. : -258.7° F
Triple Point -296.5° F
Specific Gravity, Gas @ 60° F., 1 atm. (Air = 1): 0.5549
Density, Liquid @ B.P.: 0.4256 g/ml
Density, Gas @ 0° C, 1 atm.: 0.72 g/l
Critical Temperature: -115.8° F
Critical Pressure: 673.3 psia
Critical Density: 0.162 g/ml
Latent Heat of Vaporization @ b.p.: 121.54 cal/g
Latent Heat of Fusion @ t.p.: 13.875 cal/g
Flammable Limits in Air: 5.3-14.0% by volume
Gross Heat of Combustion @ 60° F., 1 atm. 1011.6 BTU/ft3
Specific Heat, Gas @ 60° F., 1 atm. Cp: 0.5271 cal/(g)(° C)
Specific Heat, Gas @ 60° F., 1 atm. Cv: 0.4032 cal/(g)(° C)
Specific Heat Ratio, Gas @ 60° F., 1 atm., Cp/Cv: 1.307
Thermal Conductivity, Gas @ 0° C. : 7.2X10-5 cal/(sec)(cm2)(° C/cm)
Viscosity, Gas @ 4.4° C., 1 atm. : 0.0106 centipoise
Viscosity, Gas @ 37.8° C., 1 atm. : 0.0116 centipoise
Surface Tension @ -180° C.: 18.0 dynes/cm

CYLINDER CONNECTIONS (Methane):

Standard CGA V-1 Cylinder Connection up to 500 psig: CGA 510
Standard CGA V-1 Cylinder Connection up to 3000 psig: CGA 440
Standard CGA V-1 Cylinder Connection 3001 - 5500 psig: CGA 695
Standard CGA V-1 Cylinder Connection 5501 - 7500 psig: CGA 703
Standard CGA V-1 Cylinder Connection Cryogenic Liquid withdrawal: CGA 450