CONCOA Precision Gas Controls

Butane C4H10
DESCRIPTION (Butane):


Butane is a colorless, flammable gas is also known as n-Butane. It is shipped as a liquefied gas under it's own vapor pressure of approximately 16.3 psig @ 70° F. Typically used in the manufacture of aviation fuels, organic chemicals, as a calibration gas for temperature and pressure gauges and as a heating fuel.

PHYSICAL CONSTANTS (Butane):

Molecular Weight: 58.124
Vapor Pressure @ 70° F.: 16.3 psig
Specific Volume @ 70° F., 1 atm.: 6.4 cu.ft/lb
Boiling Point @ 1.0 atm. : 31.1°
Freezing Point @ 1 atm. : -217.0°
Specific Gravity, Gas @ 60° F., 1 atm. (Air = 1): 2.076
Density, Liquid @ 20° C., Saturation Pressure: 0.5788 g/ml
Critical Temperature: 305.6°
Critical Pressure: 550.8 psia
Critical Density: 0.225 g/ml
Latent Heat of Vaporization @ b.p.: 92.0 cal/g
Latent Heat of Fusion @ m.p.: 19.17 cal/g
Flammable Limits in Air: 1.9-8.5% by volume
Autoignition Temperature: 761°
Gross Heat of Combustion @ 60° F., 1 atm. 3374.4 BTU/ft3
Specific Heat, Liquid @ 60° F., 1 atm. Cp: 0.5636 BTU//(lb)(°)
Specific Heat, Gas @ 60° F., 1 atm. Cp: 0.3908 cal/(g)(° C)
Specific Heat, Gas @ 60° F., 1 atm. Cv: 0.3566 cal/(g)(° C)
Specific Heat Ratio, Gas @ 60° F., 1 atm., Cp/Cv: 1.096
Viscosity, Gas @ 14.7° C., 1 atm. : 0.0084 centipoise
Surface Tension @ -10° C., 1 atm. : 16.02 dynes/cm

CYLINDER CONNECTIONS (Butane):

Standard CGA V-1 Cylinder Connection: CGA 510