Isopropyl alcohol IUPA name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable chemical compoundchemical formula CH ₃CHOHCH ₃) with a strong odor. As an isopropyl group linked to a hydroxyl group, it is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms. It is a structural isomer of 1-propanol and ethyl methyl ether. It is used in the manufacture of a wide variety of industrial and household chemicals and is a common ingredient in chemicals such as antiseptics, disinfectant, hand sanitizer and detergents. Well over one million tonnes is produced worldwide annually.