69精品久久久久久久精品a片,人人妻人人澡人人爽人人精品,少妇荡乳情欲办公室456视频,国产精久久一区二区三区

Ammonium Fluotitanate

98% ammonium fluorotitanate, white sandy crystals. CAS：16962-40-6。 Unstable in air, decomposes in water, and loses ammonium fluoride when heated Ammonium fluoride is soluble in water and insoluble in ethanol and ether. Penetrating agent used for light metal smelting, added to chromic acid solution, can improve the corrosion resistance of metals such as steel, zinc, lead, etc. Used as a corrosion-r