Methacrylonitrile Other names: 2-Methyl-2-propenenitrile Isopropene cyanide Isopropenyl nitrile 2-Methylacrylonitrile Formula: C4H5N CAS: 126-98-7 Weight: 67,09 g/mol Boiling point: 90,3 °C Melting point: -35,8 °C Density: 0,7998 g/cm3