Fuels and Chemicals - Autoignition Temperatures
The Autoignition Temperature - or
"the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present"
are indicated for common fuels and chemicals below:
| Product | Autoignition Temperature (oC) |
|---|---|
| Acetaldehyde | 175 |
| Acetic acid | 427 |
| Acetone, propanone | 465 |
| Acentonitrile | 220 |
| Acetylene | 305 |
| Acrolein | 220 |
| Acronitrile | 481 |
| Allylamine | 374 |
| Aniline | 615 |
| Anthracite - glow point | 600 |
| Benzaldehyde | 192 |
| Benzene | 498 |
| Bituminous coal - glow point | 454 |
| Butadiene | 420 |
| Butanal | 218 |
| Butane | 405 |
| 1-Butanol | 343 |
| Butyl acetate | 421 |
| Butyl alcohol | 345 |
| Butyl methyl ketone | 423 |
| Carbon | 700 |
| Carbon disulfide, CS2 | 90 |
| Carbon monoxide | 609 |
| Charcoal | 349 |
| Coal-tar oil | 580 |
| Coke | 700 |
| Cyclohexane | 245 |
| Cyclohexanol | 300 |
| Cyclohexanone | 420 |
| Cyclopropane | 498 |
| Dichloromethane | 600 |
| Diethylamine | 312 |
| Diethyl ether | 180 |
| Diethanolamine | 662 |
| Diethylamine | 662 |
| Diesel, Jet A-1 | 210 |
| Diisobutyl ketone | 396 |
| Diisopropyl ether | 443 |
| Dimethyl sulfate | 188 |
| Dimethyl sulfide | 206 |
| Dimethyl sulphoxide | 215 |
| Dodecane, dihexyl | 203 |
| Epichlorohydrin | 416 |
| Ethane | 515 |
| Ethylene, ethene | 450 |
| Ethylamine | 385 |
| Ethyl acetate | 410 |
| Ethyl Alcohol (Ethanol) | 363 |
| Ethylene oxide | 570 |
| Formaldehyde | 424 |
| Fuel Oil No.1 | 210 |
| Fuel Oil No.2 | 256 |
| Fuel Oil No.4 | 262 |
| Furfural | 316 |
| Furfural alcohol | 491 |
| Heavy hydrocarbons | 750 |
| Heptane | 204 |
| Hexane | 223 |
| Hexadecane, cetane | 202 |
| Hydrogen | 500 |
| Gas oil | 336 |
| Gasoline, Petrol | 246 - 280 |
| Glycerol | 370 |
| Gun Cotton | 221 |
| Kerosene (paraffin) | 210 |
| Isobutane | 462 |
| Isobutene | 465 |
| Isobutyl alcohol | 426 |
| Isooctane | 447 |
| Isopentane | 420 |
| Isoprene | 395 |
| Isopropyl alcohol | 399 |
| Isophorone | 460 |
| Isohexane | 264 |
| Isononane | 227 |
| Isopropyl Alcohol | 399 |
| Light gas | 600 |
| Light hydrocarbons | 650 |
| Lignite - glow point | 526 |
| Magnesium | 473 |
| Methane (Natural Gas) | 580 |
| Methanol (Methyl Alcohol) | 464 |
| Methylamine | 430 |
| Methyl acetate | 455 |
| Methyl ethyl ketone | 516 |
| Naphtha | 230 |
| Neoheaxane | 425 |
| Neopentane | 450 |
| Nitrobenzene | 480 |
| Nitro-glycerine | 254 |
| n-Butane | 405 |
| n-Heptane | 215 |
| n-Hexane | 225 |
| n-Octane | 220 |
| n-Pentane | 260 |
| n-Pentene | 298 |
| Oak Wood - dry | 482 |
| Paper | 218 - 246 |
| Paraldehyde | 238 |
| Peat | 227 |
| Petroleum | 400 |
| Petroleum ether | 288 |
| Pine Wood - dry | 427 |
| Phosphorus, amorphous | 260 |
| Phosphorus, transparent | 49 |
| Phosphorus, white | 34 |
| Production gas | 750 |
| Propanal | 207 |
| Propane | 455 |
| Propyl acetate | 450 |
| Propylamine | 318 |
| Propylene (Propene) | 458 |
| Pyridine | 482 |
| p-Xylene | 530 |
| Rifle (Gun) Powder | 288 |
| Tetrahydrofuran | 321 |
| Triethylamine | 249 |
| Triethylborane | -20 |
| Toluene | 480 |
| Semi anthracite coal | 400 |
| Semi bituminous coal - glow point | 527 |
| Silane | < 21 |
| Styrene | 490 |
| Sulphur | 243 |
| Tetrahydrofuran | 321 |
| Toluene | 530 |
| Trichloroethylene | 420 |
| Wood | 300 |
| o-Xylene | 463 |
| m-Xylene | 527 |
| p-Xylene | 528 |
The flammable (explosive) range is the range of a gas or vapor concentration that will burn or explode if an ignition source is introduced. Limiting concentrations are commonly called the lower explosive or flammable limit (LEL/LFL) and the upper explosive or flammable limit (UEL/UFL).
Below the explosive or flammable limit the mixture is too lean to burn. Above the upper explosive or flammable limit the mixture is too rich to burn. The Auto-Ignition Temperature is not the same as Flash Point - The Flash Point indicates how easy a chemical may burn.
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