LN2, or liquid nitrogen, is a cryogenic liquid that is extremely cold, with a boiling point of -196 degrees Celsius (-321 degrees Fahrenheit). It is produced by cooling nitrogen gas until it condenses into a liquid form. LN2 is commonly used in various applications, including cryopreservation, where it helps preserve biological samples like cells and tissues. In addition to its use in scientific research, LN2 is also utilized in the food industry for flash freezing, which helps maintain the quality and texture of food products. Safety precautions are essential when handling LN2, as it can cause severe frostbite and other hazards if not managed properly.