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Toluene (Toluene)

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Toluene

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Methylbenzene
Methylbenzol
Benzene, methyl-
Methacide
Phenylmethane
Toluen
Toluol
Anisen
PhMe
MePh
BnH

+Expand -Stow

108-88-3

C7H8

92.138

2902300000

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Nature Description

Colorless transparent liquid with benzene-like odor, moderate toxicity and combustible. Melting Point-95℃, boiling point ℃, ℃(1.94kPa), relative density 0.8667(20/4 ℃), refractive index 1.49414, flash point ℃, autoignition point ℃. Soluble in ethanol, benzene, ether, insoluble in water. The explosion limit in air is 1.27-7.0. This product forms a constant boiling point mixture with acetic acid, the boiling point is 104-104.2 ℃, and the melting point is-9.5 ℃.

0.867

111℃

-95℃

4℃

0.5G/L(20℃)

1.4968

0.5G/L(20℃)

Product Applications

It is used for blending gasoline composition and as the main raw material for producing toluene derivatives, explosives, dye intermediates, drugs, etc.

Production method

The crude benzene fraction produced by coal coking contains toluene 15-20, which was once the main source of toluene. Toluene 1.1-1.3kg can be recovered per ton of coke produced. Since the 1950 s, the main source of toluene in the world has changed from coking by-product to catalytic reforming and hydrocarbon cracking. In 1982, petroleum toluene accounted for more than 96 of the total output. Catalytic reforming oil contains 50-60 aromatic hydrocarbons (Volume), of which the content of toluene can reach 40-45, the content of aromatic hydrocarbons in pyrolysis gasoline is about 70 (mass), of which 15-20 is toluene. 1. Coking by-product recovery benzene high-temperature coking by-product High-temperature tar contains part of benzene. First, through the initial distillation column, light benzene is obtained at the top of the column and heavy benzene is obtained at the bottom of the column (heavy benzene is used as the raw material for preparing kumalong resin). Light benzene is separated by the primary distillation column first, and the mixed fraction at the bottom of the column is washed by acid and alkali to remove impurities, then it is steamed and blown into the benzene column, and then it is rectified by the distillation column to obtain pure benzene. 2. The platinum reforming method uses Benzine obtained by atmospheric distillation (the initial distillation point is about 138 ℃), intercepts the fraction greater than 65 ℃, first removes harmful impurities through molybdenum-containing catalyst, then carries out reforming through platinum catalyst, solvent extraction with diethylene glycol ether, and then distillation by column to obtain benzene, toluene, xylene and other products.

Security

Dangerous Goods Marking： F

Safety instructions： S46: in case of accidental swallowing, seek doctor's advice immediately (display product container or label). S62: do not induce vomiting if swallowing carelessly; Immediately consult a doctor for diagnosis and treatment and show the product container or label. S36/37: Wear suitable protective clothing and gloves.

Hazardous material category code： R11: very flammable. R38: irritates the skin. R63: may harm the newborn baby. R65: Lung organs may be injured if swallowed. R67: Steam may cause drowsiness and fainting.

Dangerous goods transportation number： UN1294

Symbols： GHS02,GHS07,GHS08

Storage conditions： 0-6°C

Cautionary Statement： P210;P260;P280;P301+P310;P370+P378;P403+P235

Packaging grade： II

Signal word： Danger

Hazard Statement： H225;H304;H315;H336;H361d;H373