Nitrogen Liquid 99.999%
Nitrogen Liquid 99.999% is an ultrapure cryogenic liquid for demanding industrial, scientific, and medical applications requiring an inert atmosphere.
Description
Liquid nitrogen (LN2) is a cryogenic, non-flammable, non-toxic, and odorless inert gas, condensed to a liquid state. With a purity of 99.999%, it denotes an exceptionally low level of impurities, ensuring minimal interference in sensitive processes. Exhibiting a boiling point of -196°C (-320°F) at atmospheric pressure, LN2 is characterized by its extreme cold. Its primary utility stems from its inert nature, which makes it an excellent choice for displacing oxygen, preventing oxidation, and maintaining a sterile or controlled atmosphere. Upon vaporization, one liter of liquid nitrogen expands to approximately 696 liters of gaseous nitrogen at standard temperature and pressure (STP), highlighting its efficiency as a storage and transport medium for large volumes of gas. The production process typically involves the fractional distillation of liquid air, followed by rigorous purification steps to achieve the ultra-high purity level specified. This product is critical in applications where even trace contaminants can compromise product integrity, experimental results, or process efficiency.
Applications
Liquid nitrogen is extensively utilized across various industrial sectors. In electronics manufacturing, it is essential for inerting environments during semiconductor fabrication and for cooling sensitive electronic components. The food and beverage industry employs it for rapid freezing of food products, ensuring quality preservation, and for inert packaging to extend shelf life. Pharmaceutical and biotechnology sectors use LN2 for cryopreservation of biological samples, tissues, and cells, as well as for freeze-drying processes and creating inert atmospheres for drug manufacturing. In materials science, it's used for shrink-fitting, cooling materials for machining, and conducting low-temperature research. Its application also extends to dermatological treatments (cryotherapy), as a coolant for scientific instruments, and for tire inflation in specialized vehicles due to its inertness and consistent pressure over temperature ranges.
Storage & Handling
Store in well-ventilated areas in cryogenic dewars or tanks designed for extreme low temperatures. Ensure containers are kept upright and protected from physical damage. Use appropriate personal protective equipment, including cryogenic gloves and face shield, to prevent cold burns. Avoid contact with skin and eyes. Ensure adequate ventilation to prevent oxygen displacement.
Hazard
- H281 Contains refrigerated gas
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