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Molecular Formula C7H6O3
138.12
CAS molecular weight of 69-72-7
acid white crystalline powder, odorless, slightly bitter taste after the first turn Xin. 157-159 ° C melting point, in light Beijing gradually change. The relative density of 1.44. The boiling point of about 211 ° C / 2.67 kPa. 76 ° Csublimation. Pressure rapid thermal decomposition of phenol and carbon dioxide. 1g acid can be dissolved in 460ml.The water, 15 ml boiling water, 2.7ml ethanol, acetone 3ml, 3ml ether, chloroform 42ml, 135ml benzene, 52ml turpentine, about Scanning glycerol and petroleum ether were thyroidectomy. By adding sodium, such as borax acid can increase the solubility in water. Salicylic acid aqueous solution of pH 2.4. Salicylic acid and ferric chloride solution with special purple.
purposes; Salicylic acid is an important chemical raw material. In the pharmaceutical industry, salicylic acid itself is a very widespread use of disinfection preservatives. As pharmaceutical intermediates, which can be used to restrain synthetic nitrogen sulfamethoxazole (Salazosulfanilamidum), salicylic acid azo sulfamethazine (Salazosulfdimidine), antipyretic painkillers aspirin (aspirin), sodium salicylate (Natrii salicylas), salicylaldehyde amide (Salicylamide), acid ethyl benzene ammonia (Ethoxybenzamidum) , flutter YANTONGPING (Benorylatum), two Diflunsial (Diflunisal), salicylic acid naphthylisothiocyanate (Salinaphtol), acetyl Salicylaldehyde amide (Salacetamide), Luo Ning bhp (Lopirin), Finland amine furosemide (Fenamifuril), Shalifen (Saliphen), vinegar salicylaldehyde ether amine (Salicylamid-o - Essigsaure), such as cutting red hydrazone (Ruvazone), Antoanella ester (Anilamate) and fluoride Weilin Liu (Salfuverine) hundreds of drugs.
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