As an organic synthetic raw material, used in the manufacture of resin and plasticizer, dye, pesticide, etc., are also used in synthesis of fire retardant agents, plasticizer, preservatives, fuel brightening agent, etc., is also a color film and the resin intermediate.
From phenol oil or tar acid separated, can also be used for toluidine diazotization and hydrolysis. Traditional synthetic methods mainly USES the synthesis, can also be a by-product of coking, oil shale distillation and city gas separation of the mixed cresol. Rooms, BHT can use azeotropic method, urea, dissociation benzene extraction, separation methods such as sulfonated hydrolysis method. Main synthetic methods are isopropyl toluene, o-xylene oxidation method, phenol alkylation method, methyl chloride hydrolysis method and toluene sulfonated alkali fusion method, commonly used method is isopropyl toluene sulfonated alkali fusion method, toluene and o-xylene oxidation method.