久久热这里这里只有精品,九色论坛蝌蚪成人尤物,91大神久久久久久久久久,福利小视频一区二区三区,91成年人在线观看网站久色,中文字幕亚洲精品高清,国产三级国产成人国内精品,天天干夜夜操91视频网站,中文字幕人成人亚洲乱码

Fluoroboric Acid

Fluoroboric acid is an inorganic compound with the chemical formula HBF4. It belongs to strong inorganic acids and is a colorless and transparent liquid that is miscible with water and alcohols. However, it is hydrolyzed in water and decomposes when heated to 130 degrees Celsius. It is toxic and highly corrosive. Mainly used for cleaning and corroding metal surface oxides and silicate films. Fluor