99久久久久久丨国产午夜人做人免费视频中文丨成人一区av丨国产69精品久久久久99尤物丨中文永久有效幕中文永久丨射久久丨欧美性生交xxxxx丨亚洲乱仑丨国产对白精品刺激二区国语丨日韩精品五区丨欧美精品入口丨在线最全导航精品福利av丨成人片黄网站a毛片免费观看丨国产综合18久久久久久丨欧美精品免费在线丨av免费播放一区二区三区丨中国一级黄色丨欧美精品tushy高清丨字幕网在线丨va精品

3-Cyanopyridine, precipitated from the petroleum ether or ether, is needle crystal. It can sublimate, also can be soluble in alcohol, ether, chloroform, benzene and petroleum ether, slightly soluble in water. Density: 1.159 g/ ml, melting point: 50﹣51 ℃, boiling point: 48 ℃, flash point: 84 ℃.

It is used for intermediates as medicine, food additives, feed additives, insecticide etc..