In 1767, Swedish chemist Torbern Bergman synthesized alum by boiling alunite in sulfuric acid and introducing potash to the solution. He also synthesized alum as being a response product or service in between sulfates of potassium and earth of alum, demonstrating that alum was a double salt. The 1st individual https://homebasedbusinessideas.blogzet.com/considerations-to-know-about-aluminium-43427387