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ES&H
Manual Flammable
Gas Supplement |
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Chapter 6 Flammability Limits |
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Table 1: Fire Hazard Properties of Flammable Liquids,
Gases, and Volatile Solid
NFPA Fire Protection Guide to
Hazardous Materials, 13th Edition
Gas |
Density at NTP (kg/m3) |
Flammability Limits (percentage volume in air at NTP) |
Hydrogen* |
0.0824 |
4.0-75.0 |
Deuterium* |
0.180 |
5.0-75.0 |
Methane |
0.668 |
5.0-15.0 |
Acetylene* |
1.174 |
2.5-100** |
Ethane |
1.26 |
3.0-12.5 |
Propane |
1.87 |
2.1-9.5 |
Isobutane |
2.49 |
1.8-8.4 |
Dimethyl
Ether |
1.95 |
3.4-27.0 |
* Not expected to be routinely used in
detectors because of its large flammability range, included for reference
only. ** Flammable limit is 82%, but can explode
under pressure up to 100%. |
Cylinders
are generally specified as containing a given number of standard cubic feet
(SCF). The inventory may be estimated by
using the above densities of the gas phase with the conversion 0.028 m3/ft3.
Revision
Summary
Periodic Review 05/06/16 No changes per TPOC
Revision 1.0 06/15/11 New content
TECHNICAL POINT-OF-CONTACT |
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