Description
Salicylic acid is an important organic synthetic raw material and is widely used in medicine, pesticide, rubber, dye, food and fragrance industries. In the pharmaceutical industry, the main drugs used in the production of salicylic acid are sodium salicylate, oil of wintergreen (methyl salicylate), aspirin (acetylsalicylic acid), salicylic acid amine, benzene salicylate esters, etc. In the dye industry, it is used to produce mordant pure yellow, direct yellow 3GN, direct yellow GR, direct brown 3GN, acid mordant brown G, acid mordant yellow GG, acid complex yellow and other dyes. In the production of pesticides, salicylic acid is used to synthesize the intermediates of the organophosphorus insecticides amphophos, isopropyl salicylate, and the intermediates of the rodenticides warfarin and coumate4 -Hydroxycoumarin. In the rubber industry, it is used as an anti-scorch agent and in the production of ultraviolet absorbers and foaming agents. Fragrance raw materials, preparation of methyl salicylate, ethyl salicylate, etc.; food preservatives, most of which are sodium salts, which are now banned in some countries; methyl salicylate can be used as oral cleaners, such as toothpaste spices.
