Its appearance is gray-black, metallic, scaly or granular crystals. It has a pungent, irritating taste. It can sublime and volatilize purple, corrosive vapor at room temperature. Brand: Soarwin CAS No.: 7553-56-2 EC Number:231-442-4 Molecular Formula: I2 Density: 1.32g/mLat 25°C Melting point: 113°C(lit.) Boiling point: 184°C(lit.)