Commonly known as Alum is used as a mordant in fabric dying and as a prewash organic fabric cloth to enable maximum penetration of the fabric dyes. Used on its own or combined 1:1 with soda ash by volume dissolve mix in warm water and pre wash fabric by hand or machine wash.
Also used as a preservative in dextrine or corn starch preparation in hot cooking process. Similiar use in paper mache as a preservative in the paper mash.
Alum is also a tanning chemical use in taxidermy