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:

Fuel or Chemical 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, CS 2 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.