May be the color of copper sulfate. Before the treatment of wastewater, the impurities cover the color, poly aluminum, polyacrylamide flocculation sedimentation
Leather, Oilfield: crystalline aluminum chloride Molecular formula: AlCl3, hydrolyzed in wet air to form hydrogen chloride white smoke. Not burning, non-toxic.
Put more calcium aluminate powder is strong alkali weak acid salt, ph value is higher, the release is mainly used to adjust the pH of polyaluminum chloride
Large amount of chemical manufacturers need to purchase aluminum chloride, cheaper; go to the chemical store to buy, easy. Baidu map search to know where it is