Aluminum sulfate is an inorganic compound with the chemical formula Al2(SO4)3 and a molecular weight of 342.15. It is a white crystalline powder.

In the papermaking industry, it is used as a precipitant for rosin glue, wax emulsion and other sizing materials, as a flocculant in water treatment, and as an internal retention agent for foam fire extinguishers. It is a raw material for making alum and aluminum white, a raw material for petroleum decolorization, deodorization, and medicine, etc. It can also be used to make artificial gems and high-grade ammonium alum.

Product uses

1. Used as a paper sizing agent in the papermaking industry to enhance the water resistance and anti-seepage properties of paper;

2. After dissolving in water, it can make the fine particles and natural colloid particles in the water condense into large flocs, thereby removing them from the water, so it is used as a coagulant for water supply and wastewater;

3. Used as a turbid water purifier, and also used as a precipitant, color fixative, filler, etc. In cosmetics, it is used as a raw material for antiperspirant cosmetics (astringent);

4. In the fire protection industry, it is used with baking soda and foaming agent to form a foam fire extinguishing agent;

5. Analytical reagent, mordant, tanning agent, oil decolorizer, wood preservative;

6. Albumin pasteurization stabilizer (including liquid or frozen whole eggs, egg whites or egg yolks);

7. It can be used as a raw material for the manufacture of artificial gemstones and high-grade ammonium alum, other aluminates;

8. In the fuel industry, it is used as a precipitant in the production of chrome yellow and lake dyes, and it also acts as a color fixer and filler.

9. It is used as an effective cross-linking agent for animal glue and can increase the viscosity of animal glue. It is also used as a curing agent for urea-formaldehyde adhesives, and the 20% aqueous solution cures quickly.