IUPAC name propan-2-ol other names 2-propanol, isopropanol, isopropyl alcohol, rubbing alcohol Identifiers CAS number 67-63-0 Y PubChem 3776 ChemSpider 3644 RTECS number NT8050000 Molecular formula C3H8O Molar mass 60.1 g mol1 Appearance Colorless liquid Density 0.786 g/cm (20 C) Melting point 89 C, 184 K, -128 F