how cold is liquid nitrogen?
How cold is liquid nitrogen? Under normal atmospheric pressure, nitrogen exists as a liquid between the temperatures of -210Â°C and -196Â°C which equals -346Â°F and -320.44Â°F. Below -210Â°C, nitrogen freezes and becomes a solid. Above -196Â°C, nitrogen boils and becomes a gas. Liquid nitrogen stored in unpressurized conatainers like the tanks sold here is slowly boiling away, so the temperature is -196Â°C or -320.44Â°F.