Rasio konsentrasi gas mudah terbakar dan Oksigen bergantung kepada jenis gas atau uap.
Konsentrasi minimum gas mudah terbakar untuk dapat terjadinya ledakan atau api, disebut dengan LEL (Lower Explosive Limit). Sedangkan konsentrasi maksimal disebut dengan UEL (Upper Explosive Limit). Diatas UEL maka campurannya terlalu 'kaya' sehingga tak dapat terbakar.
Konsentrasi dibawah iini berdasarkan kondisi dimana pengujian dilakukan, biasanya pada suhu dan tekanan berometrik ruangan, menggunakan tabung 2 inch dengan sumber api.
Sumber :
Gas Data Book, 7th edition, copyright 2001 by Matheson Gas Products,
Bulletin 627, Flammability Characteristics of Combustible Gases and Vapors, copyright 1965 by U.S.Department of the Interior, Bureau of Mines.
Konsentrasi dalam persen Volum.
Gas | LEL | UEL | Gas | LEL | UEL | |
Acetone | 2.6 | 13 | Heptane | 1.1 | 6.7 | |
Acetylene | 2.5 | 100 | Hexane | 1.2 | 7.4 | |
Acrylonitrile | 3 | 17 | Hydrogen | 4 | 75 | |
Allene | 1.5 | 11.5 | Hydrogen Cyanide | 5.6 | 40 | |
Ammonia | 15 | 28 | Hydrogen Sulfide | 4 | 44 | |
Benzene | 1.3 | 7.9 | Isobutane | 1.8 | 8.4 | |
1,3-Butadiene | 2 | 12 | Isobutylene | 1.8 | 9.6 | |
Butane | 1.8 | 8.4 | Isopropanol | 2.2 | – | |
n-Butanol | 1.7 | 12 | Methane | 5 | 15 | |
1-Butene | 1.6 | 10 | Methanol | 6.7 | 36 | |
Cis-2-Butene | 1.7 | 9.7 | Methylacetylene | 1.7 | 11.7 | |
Trans-2-Butene | 1.7 | 9.7 | Methyl Bromide | 10 | 15 | |
Butyl Acetate | 1.4 | 8 | 3-Methyl-1-Butene | 1.5 | 9.1 | |
Carbon Monoxide | 12.5 | 74 | Methyl Cellosolve | 2.5 | 20 | |
Carbonyl Sulfide | 12 | 29 | Methyl Chloride | 7 | 17.4 | |
Chlorotri uoroethylene | 8.4 | 38.7 | Methyl Ethyl Ketone | 1.9 | 10 | |
Cumene | 0.9 | 6.5 | Methyl Mercaptan | 3.9 | 21.8 | |
Cyanogen | 6.6 | 32 | Methyl Vinyl Ether | 2.6 | 39 | |
Cyclohexane | 1.3 | 7.8 | Monoethylamine | 3.5 | 14 | |
Cyclopropane | 2.4 | 10.4 | Monomethylamine | 4.9 | 20.7 | |
Deuterium | 4.9 | 75 | Nickel Carbonyl | 2 | – | |
Diborane | 0.8 | 88 | Pentane | 1.4 | 7.8 | |
Dichlorosilane | 4.1 | 98.8 | Picoline | 1.4 | – | |
Diethylbenzene | 0.8 | – | Propane | 2.1 | 9.5 | |
1,1-Difluoro-1-Chloroethane | 9 | 14.8 | Propylene | 2.4 | 11 | |
1,1-Difluoroethane | 5.1 | 17.1 | Propylene Oxide | 2.8 | 37 | |
1,1-Di uethylene | 5.5 | 21.3 | Styrene | 1.1 | – | |
Dimethylamine | 2.8 | 14.4 | Tetrafluoroethylene | 4 | 43 | |
Dimethyl Ether | 3.4 | 27 | Tetrahydrofuran | 2 | – | |
2,2-Dimethylpropane | 1.4 | 7.5 | Toluene | 1.2 | 7.1 | |
Ethane | 3 | 12.4 | Trichloroethylene | 12 | 40 | |
Ethanol | 3.3 | 19 | Trimethylamine | 2 | 12 | |
Ethyl Acetate | 2.2 | 11 | Turpentine | 0.7 | – | |
Ethyl Benzene | 1 | 6.7 | Vinyl Acetate | 2.6 | – | |
Ethyl Chloride | 3.8 | 15.4 | Vinyl Bromide | 9 | 14 | |
Ethylene | 2.7 | 36 | Vinyl Chloride | 4 | 22 | |
Ethylene Oxide | 3.6 | 100 | Vinyl Fluoride | 2.6 | 21.7 | |
Gasoline | 1.2 | 7.1 | Xylene | 1.1 | 6.6 |
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