Physicochemical properties
Appearance, smell and condition: blue, odorless, deep cold liquid.
Molecular weight: 32.00
Boiling point (1 atmosphere) : -297.3°F (-183.0°C)
Specific gravity (AIR=1) : 1.10
Freezing/melting point: -361.9°F(-218.8°C)
Gas density (70°F (21.1°C) at 1 atmosphere) : 0.083 lb/ft3(1.326kg/m3)
Product use
Suitable for metal welding and cutting. Mixing with acetylene can obtain a very high flame temperature to melt the metal, which is widely used in smelting and top blowing oxygen steelmaking. Mixed with water vapor can be blown into the gas gasifier instead of air to obtain a higher calorific value of gas. It is used in medical oxidation therapy to treat pneumonia, gas poisoning, etc. The chemical industry is used to strengthen the production of nitric and sulfuric acid. Liquid oxygen can be used as a combustion agent for liquid oxygen explosives and rocket propellants.