Chrome Alum Crystal

Chrome alum or chromium alum is a safe salt that produces dark, purplish crystals. Key Takeaways An alum is a type of chemical compound with the general formula XAl(SO4)2·12H2O, where X is a monovalent cation such as potassium or ammonium Alum crystals form octahedral shapes in their purest form Mixed Chrome Alum crystals consist of potassium alum (KAl(SO4)2·12H2O) mixed with chrome alum (KCr(SO4)2·12H2O)… Continue reading Chrome Alum Crystal