龙胆酸 Benzoic acid 化学名：2,5-二羟基苯甲酸 CASNo：490-79-9 分子式：C7H6O4 分子量：154.12 同义词: 5-羟基水杨酸;氢醌羧酸; 英文名称: 2,5-Dihydroxybenzoic acid ；Benzoic acid 化学性质 白色针状结晶。熔点204.5-205℃。溶于水、乙醇和乙醚， 难溶于氯仿、苯和二硫化碳。在150℃以上长时间加热则分解为二氧化碳 和氢醌， 在空气中不稳定。遇三氯化铁呈蓝色。 用途 龙胆酸本身是一种解热镇痛药，也用作医药中间体 包装：25公斤 Benzoic acid Chemical name: 2,5 - dihydroxybenzoic acid CASNo :490-79-9 Molecular Formula: C7H6O4 MW: 154.12 Synonyms: 5 - hydroxy acid; hydroquinone carboxylic acid; English name: 2,5-Dihydroxybenzoic acid; Benzoic acid Chemical properties of white needle crystal. Melting point 204.5-205 ℃. Soluble in water, ethanol and ether, insoluble in chloroform, benzene and carbon disulfide. Heated above 150 ℃ for a long time is broken down into carbon dioxide and hydroquinone, in the air unstable. Case of ferric chloride was blue.Gentisate use itself is a anti-inflammatory drugs, also used as pharmaceutical intermediates Packing: 25kg cardboard drum
