The melting point of nitrogen is -346 degrees Fahrenheit. Liquid nitrogen boils at about -320 degrees Fahrenheit. At room temperature, pure nitrogen is a gas.
Nitrogen makes up about 78 percent of Earth's atmosphere and is thought to be the seventh-most abundant element in the universe. Because it has such a low boiling point and is so commonly obtainable, nitrogen is an ideal refrigerant for long-term storage of perishables. Nitrogen has many other industrial uses, such as fertilizers, organic compounds and hydraulic fracking fluid. While pure nitrogen is inert, it can be combined into several unstable compounds and is a common component in explosives.