Phenoxazine CAS NO.:135-67-1 Molecular Formula: C12H9NO Molecular Weight: 183.21 Density:1.196 g/cm3 Melting Point:156-159 °C(lit.) Boiling Point:318 °C at 760 mmHg Flash Point:122.6 °C Solubility:soluble in ether, benzene, mineral acid and almost insoluble in water. Appearance:grey to green-grey fine crystalline powder.