The main functions of liquid nitrogen are:
1. Rapidly freezing and transporting food, or making ice products.
2. Provide the temperature required for high-temperature superconductors to display superconductivity.
3. It can be used as a refrigerant to quickly freeze biological tissues to prevent tissue damage.
4. Used for industrial nitrogen fertilizer production and chemical testing, such as BET specific surface area testing method.
5. In surgical operations, rapid freezing can be used to help stop bleeding and remove the superficial layers of the skin that need to be removed.
6. Preservation of living tissues, biological samples, sperm and eggs.
Extended information
Notes
1. Operation precautions: Close operation and provide good natural ventilation conditions. When transporting, load and unload with care to prevent damage to the cylinder and accessories.
2. Storage precautions: Store in a cool, ventilated warehouse. The storage temperature should not exceed 30℃. The storage area should be equipped with leakage emergency response equipment.
3. Respiratory system protection: When the oxygen concentration in the air in the workplace is lower than 18, air respirators, oxygen respirators, etc. must be worn.
4. Liquid nitrogen spillage treatment: Use mist water spray to accelerate the evaporation of the liquid, but do not allow the water gun to shoot into the liquid.
Baidu Encyclopedia-Liquid Nitrogen