俺来也色色-精品国产4P一区二区-裸体自慰写真-久久国产精品77777-一本之道DVD不卡视频-92成人-亚洲免费A片-伊人狼人在线视频-三级免费播放器-理论片国产+欧美,学习成人A片,J大大奶,黑人借宿NTR中文字幕

Ammonium Bifluoride

Ammonium hydrogen fluoride, also known as acid ammonium fluoride, is an inorganic compound that is a white or colorless transparent orthorhombic crystal system. It appears in the form of flakes, slightly sour in taste, corrosive, easily deliquescent, soluble in water as a weak acid, soluble in water, slightly soluble in ethanol, and decomposes when heated or in hot water. It is mainly used as an e