柠檬酸是一种重要的有机酸,又名枸橼酸,无色晶体,常含一分子结晶水,无臭,有很强的酸味,易溶于水。其钙盐在冷水中比热水中易溶解,此性质常用来鉴定和分离柠檬酸。结晶时控制适宜的温度可获得无水柠檬酸。在工业,食品业,化妆业等具有极多的用途。 名称:柠檬酸 药品通用名称:枸橼酸 英文名称:citric acid 化学名称:2-羟基-均丙三羧酸 英文名称2:2-hydroxy-1,2,3-propanetricarboxylic
acid CAS No.:77-92-9 EINECS号:201-069-1 分子式:C6H8O7 分子量:192.14 外观与性状:白色结晶粉末,无臭。 熔点(℃):153 。255 沸点(℃):(175℃分解) 相对密度(水=1):1.6650 闪点(℃):100 引燃温度(℃):1010.87(粉末) 爆炸上限%(V/V):8.01333。。。。。(65℃) 离解常数(25℃):Ka1=7.4×10^-4,Ka2=1.7×10^-5,Ka3=4.0×10^-7 溶解性:溶于水、乙醇、丙酮,不溶于乙醚、笨,微溶于氯仿。水溶液显酸性。
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