Function and application of toluene

      Toluene is widely used as a solvent and an additive for gasoline with high octane number. It is also an important raw material for organic chemical industry. However, compared with benzene and xylene obtained from coal and petroleum, the current output is relatively excessive. Therefore, a considerable amount of toluene is used for dealkylation to benzene or disproportionation to xylene. A series of intermediates derived from toluene are widely used in dyes; Medicine; pesticides; Explosives; auxiliary; The production of fine chemicals such as spices is also used in the synthetic material industry. Monochlorobenzene obtained by side chain chlorination of toluene; Dichlorobenzyl and Trichlorobenzene, including their derivatives benzyl alcohol; Benzaldehyde and benzoyl chloride (also commonly obtained from the phosgenation of benzoic acid), in medicine; pesticides; Dyes, especially fragrances, are widely used in the synthesis. The cyclic chlorination product of toluene is pesticide; Medicine; Intermediates of dyes. Benzoic acid obtained by oxidation of toluene is an important food preservative (mainly its sodium salt) and also used as an intermediate in organic synthesis. Intermediates prepared by sulfonation of toluene and benzene derivatives, including p-toluenesulfonic acid and its sodium salt; CLT acid; Toluene-2,4-disulfonic acid; Benzaldehyde-2,4-disulfonic acid; Toluenesulfonyl chloride, etc., used as detergent additive and anti caking additive for chemical fertilizer; Organic pigments; Medicine; Production of dyes. A large number of intermediates were obtained by nitration of toluene. Many super end products can be derived, including polyurethane products; Dyes and organic pigments; Rubber additives; Medicine; Explosives are extremely important.