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/L |
| 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 |
