3-14
SET-UP AND SAFE OPERATING PROCEDURES
0056-0114
Specifications
SAFETY
Shock sensitivity Stable
Explosive limits in oxygen (%) 2.0-57
Explosive limits in air (%) 2.0-10
Maximum allowable use pressure
Cylinder
(135 PSIG @ 70°F)
Tendency to backfire Moderate
Toxicity Low
COMBUSTION PROPERTIES
Neutral flame temperature (°F) 5240
Burning velocity in oxygen (ft. / sec.) 15.0
Primary flame (BTU / cu. ft.) 403
Secondary flame (BTU / cu. ft.) 1969
Total heat (BTU / cu. ft.) 2372
Total heating value [after vaporization] (BTU / lb.) 20,000
Auto ignition temperature (°F) 896
VALVE OUTLET AND REGULATOR INLET CONNECTION
CGA 510-.885” - 14 NGO-LH-INT (POL Outlet)
*All values are approximations*
If more detailed specifications are required, contact your fuel gas supplier for the specific properties
of the fuel gas.
3.05 FUEL GASES WITH NATURAL GAS OR PROPANE BASE
PLUS LIQUID HYDROCARBON ADDITIVES
These fuel gases consist of a natural gas or propane base which is enriched by a liquid hydrocarbon
additive. The liquid hydrocarbon additive is usually a low-boiling point, petroleum ether fraction of
n-pentane and / or iso-pentane. N-pentane has a heating value of approximately 4,249 BTU/cu.ft.
Pentane added to natural gas will show a greater percentage increase in heating value, as the BTU
heat value of natural gas is approximately 1050 BTU/cu.ft. This is not meant to imply that all the fuel
gases listed above use n-pentane or iso-pentane as the liquid hydrocarbon additive.
The physical and combustion properties of these fuel gases vary according to the percentage of
additives added to the base of natural gas or propane. Use the general specifications for natural gas
and propane as listed in the preceding pages as a guide only. Contact your fuel gas supplier for the
specific properties of the fuel gas if more detailed specifications are required.
Industrial Gases
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