Alum - Potassium Auminum Sulfate

Alum is readily available in several form, It is often used as a crisping agent and a main ingredient in pickling. It is also used for marbling effects on fabrics and paper

According to Canadian Hazardous Regulation, this prosuct is not Hazardous.

Check out a Material Safety Data Sheet for Alum from VWR

Check out the Canada fact sheet for Alum.