国产精品无码av在线一区_又爽又黄又无遮挡的激情毛片_成人免费视频在线看_中国一级无码av毛片_男人的天堂网站导航_免费观看的**片手机视频_免费无码国产在线观看p_激情五月综合 精品久久_中文字幕一区二区精彩影视_厨房激战大乳熟女

Physical property:

There is ammonia smell. Volatile. It is strongly alkaline. Easily soluble in water, soluble in ethanol and ether. Flammable. Lethal dose (rabbit, vein) 4.0g/kg. It is irritating.

Purpose:

Used as raw materials for the production of drugs, dyes, pesticides, leather depilators, rubber vulcanization accelerators, rocket propellants, etc.