Project Report

Project Description

Alums are hydrated double sulphate salt of aluminum with the general formula X (Al2SO4)2. 12 H2O, where “X” can be a monovalent cation such as the Potassium or the Ammonium cation. However, the tripositive ion, aluminum, are also replaced by Chromium and Iron ions. The name “Alum” is also more generally used for salts with the same chemical formula and structure, except for the fact that aluminum is replaced by other tri-positive metal ions such as Chromium (III), example being Chrome Alum which is K Cr(SO4)2ꞏ12H2O. Those containing Iron sulphate are termed as “Ferric Alum” while those that contain Chromium and Aluminum Sulphate are called “Non-Ferric Alum”. By itself, “Alum” generally refers to Potassium Alum with the formula K (Al2SO4)2. 12 H2O. Other alums are named after the monovalent cation that is present in the compound such as the Sodium alum when sodium cation is present, Ammonium alum when ammonium ions are present, etc. The cheapest grade of Alum is called “Alum Cake”. Potash Alum is also known as “Alum Alumen”. Though Alum can be recovered from its naturally occurring minerals like Alunite and Kalinite, but they are not much available in India.

Price : ₹ 1999/- ₹ 1500 /- (inclusive of GST 18%)