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Fuels and Chemicals - Autoignition Temperatures

The autoignition point for some common fuels and chemicals butane, coke, hydrogen, petroleum and more

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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 ChemicalAutoignition
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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  • Engineering ToolBox, (2003). Fuels and Chemicals - Autoignition Temperatures. [online] Available at: https://www.engineeringtoolbox.com/fuels-ignition-temperatures-d_171.html [Accessed Day Mo. Year].

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