Toluene ignition temperature

Toluene is a colorless, flammable liquid with a benzene-like odor, bp 110.8°C, flash point 4.4°C, ignition temperature 552°C, and TLV (TWA) = 50 ppm. 

Toluene (C6H5CH3, boiling point 110.8°C, density 0.8548, flash point 4.4°C, ignition temperature 552°C) is a colorless, flammable liquid with a benzenelike odor that is essentially insoluble in water but is fully miscible with alcohol, ether, chloroform, and many other organic liquids. Toluene dissolves iodine, sulfur, oils, fats, resins, and phosgene. When ignited, toluene burns with a smoky flame. Unlike benzene, toluene cannot be easily purified by crystallization. 

Alcohols do not form peroxides when undergoing oxidation, oxidize at relatively high temperatures, and comprise non-knocking fuels.45 Aromatic compounds as benzene and toluene have relatively high ignition temperatures and are excellent non-knocking fuels. 

The third and final hydrocarbon family to be discussed is known as the aromatic hydrocarbons, sometimes referred to as the BTX fraction (benzene, toluene, xylene). One additional aromatic beyond the BTX fraction is called styrene and will be covered as the fourth aromatic compound. Aromatics as a group are toxic and flammable. They have moderate boiling and flash points, narrow flammable ranges, high ignition temperatures, and are nonpolar. 

Table 2. Tid- temperature at which 50% of toluene is oxidized, (7i) ignition temperature (°C).

Toluene is a notoriously poor electrical conductor even in grounded equipment it has caused several fires and explosions from static electricity. Near normal room temperature it has a concentration that is one of the easiest to ignite and, as previously discussed, that generates maximum explosion effects when ignited (Bodurtha, 1980, p. 39). Methyl alcohol has similar characteristics, but it is less prone to ignition by static electricity because it is a good conductor. Acetone is also a good conductor, but it has an equihbrium vapor pressure near normal room temperature, well above UFL. Thus, acetone is not flammable in these circumstances. 

The effects, in general, were (a) ignition was promoted at 700°C. (b) the magnitude of promotion decreased with temperature till eventually inhibition set in (c) the magnitude of inhibition increased with temperature. With benzene inhibition set in below 750°C., with toluene... 

A flammable chemical substance is a solid, liquid, vapor, or gas that ignites easily and burns rapidly in air. Many of the flammable chemicals used in laboratories are flammable liquids and organic solvents. The vapors of these chemical substances form ignitable mixtures with air. Based on the flash points of these chemicals, classifications are made. The flash point of a chemical substance is defined as the lowest temperature at which a fuel-air mixture present above the surface of a liquid will ignite, if an ignition source is present. The common flammable chemical substances include, but are not restricted to, acetone, benzene, cyclohexane, ethanol, ethyl acetate, ethyl ether, gasoline, hexane, isopropyl alcohol, methanol, propanol, tetrahydro-furan and toluene, and xylene. 

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