Isopropyl alcohol Product name: Isopropyl Alcohol Molecular formula:C3H8O CAS No.: 67-63-0 Class: 3 UN No.:1219 Isopropanol is a clear, colorless alcohol that is used in the production of acetone and as a solvent in the manufacture of various industrial and commercial products. It is used by the public for a number of different purposes and is commonly known as rubbing alcohol. It is flammable and miscible with both water and many different organic solvents. Isopropanol can be prepared via three different methods: indirect hydration of propylene (the strong acid method), direct hydration of propylene, and catalytic hydrogenation of acetone.