龍膽酸
Benzoic acid
化學名：2,5-二羥基苯甲酸
CASNo：490-79-9
分子式：C7H6O4
分子量：154.12
同義詞: 5-羥基水楊酸;氫醌羧酸;
英文名稱: 2,5-Dihydroxybenzoic acid ；Benzoic acid
化學性質 白色針狀結晶。熔點204.5-205℃。溶于水、乙醇和乙醚，
難溶于氯仿、苯和二硫化碳。在150℃以上長時間加熱則分解為二氧化碳 和氫醌，
在空氣中不穩定。遇三氯化鐵呈藍色。
用途 龍膽酸本身是一種解熱鎮痛藥，也用作醫藥中間體
包裝：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
龍膽酸