Oxygen

Physical properties


Physical state @ 20°C: Gas [1]
Color: O2: Gas: Colorless [1]. Liquid: Pale blue
O3: Gas: bluish. Liquid: bluish-black. Solid: violet-black
Odor: Almost odourless [1]
Molecular weight (g/mol): 15.9994
Melting point (°C): List of melting points -218.79 (O2) [2]
Boiling point (°C): List of boiling points -182.95 (O2) [2]
Critical temperature (°C): -118.56 [2]
Refractive index: O3 (l): 1.2226 [2]