alpha-Methylstyrene Other names: Isopropenylbenzene (1-Methylethenyl)-benzene 2-Phenyl-1-propene Formula: C9H10 CAS: 98-83-9 Weight: 118,18 g/mol Boiling point: 145,2 °C Melting point: -30,6 °C Density: 0,906 g/cm3