Liquid nitrogen is the liquefied form of the element nitrogen that is commercially produced by fractional distillation of liquid air.  The liquid to gas expansion ratio of nitrogen is 1:694, which means liquid nitrogen boils to fill a volume with nitrogen gas very quickly.

Uses of Liquid Nitrogen

• Freezing and transport of food products.

• Cryopreservation of biological samples.

• Coolant for superconductors, vacuum pumps, and other materials and equipment.

• Cryotherapy to remove skin abnormalities.

• Shielding materials from oxygen exposure.

• Cooling materials for easier machining or fracturing.

- Physical state: Liquid
- Vapor pressure : G as@ 70°F (21°C)
- Vapor sp. gravity (air=1): 0.967 @ 70°F (21°C)
- Volatiles (% by volume) 100%
- Boiling point : -195.8°C (760 mmHg)
                        -320.4°F
- Freezing point : -209.9°C
                            -345.8°F
- Appearance & odor: Colorless, odorless.
- Odor threshold (PPM): Odorless.
- Solubility in water (%): Slight.

Check Liquid Nitrogen Material Safety Data Sheet here>>