Question

write the properties and uses of the following substances 1. Alum 2. Borax 3. Epsom salt 4. Barium chloride 5. Sodium sulphate

Answer 1

Any form of aluminum sulfate could be called "alum," including toxic versions of the chemical. However, the type of alum you find used for pickling and in deodorant is potassium alum, KAl(SO4) ... Although alum is approved as a food additive by the U.S. Food and Drug Administration, it is toxic in large doses.