The chemical formula is Al2 (SO4) 3, formula quantity is 342.15, white orthorhombic crystal powder, density is 1.69 g / cm 3 (25 ℃)
It is very soluble in water, aluminum sulfate can not be dissolved in pure sulfuric acid (only coexist).
In papermaking industry, it is used as a precipitant for rosin and wax emulsion, and can be used as flocculant in water treatment. It can also be used as an internal retaining agent for foam extinguishers, making alum, aluminum and white raw materials, oil decolorizing, deodorant, raw materials for certain medicines, etc. It can also be used to make artificial gemstones and high-grade ammonium alum.