o-Nitrotoluene Other names: 2-Nitrotoluene ortho-Nitrotoluene 1-Methyl-2-nitrobenzene Formula: C7H7NO2 CAS: 88-72-2 Weight: 137,14 g/mol Boiling point: 221,8 °C Melting point: -4,5 °C Density: 1,163 g/cm3