Liquid nitrogen is very cold! At normal atmospheric pressure, nitrogen is a liquid between 63 K and 77.2 K (-346°F and -320.44°F). Over this temperature range, liquid nitrogen looks much like boiling water.Below 63 K, it freezes into solid nitrogen.
Liquid nitrogen—LN 2 —is nitrogen in a liquid state at low temperature (−195.79 °C (77 K; −320 °F) boiling point at sea level).It is produced industrially by fractional distillation of liquid air.It is a colorless, low viscosity liquid that is widely used as a coolant.
Above -196°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 -196°C or -320.44°F. So how cold is liquid nitrogen? Very cold! Since liquid nitrogen is obtained from the atmosphere, it is inexpensive and is rarely refrigerated.
Nitrogen is a liquid when it is cooled to a temperature between minus 346 degrees Fahrenheit and minus 320.44 degrees Fahrenheit. Liquid nitrogen resembles water when it boils, but when it is colder than minus 346 degrees, it turns into a solid. Liquid nitrogen is a compact and colorless liquid that can be used for a wide variety of purposes.
Dry ice vs liquid nitrogen is an interesting topic to investigate the properties of what we think of as hot, cold and boiling. At temperatures far below zero, dry ice and the much colder liquid nitrogen create interesting effects.
Since it is obtained from the atmosphere, liquid nitrogen is inexpensive and is rarely refrigerated. It is kept in insulated containers called Dewars and is allowed to boil away. Since it is boiling, most of the liquid nitrogen used in laboratories and in cryogenics shows is at a temperature of 77.2 K. Liquid nitrogen looks like boiling water.
Professor Peter Barham, from the University of Bristol's School of Physics, says liquid nitrogen is "simply the harmless gas nitrogen, which has been cooled to such a low temperature that it ...
Liquid nitrogen is a form of the element nitrogen that's cold enough to exist in a liquid state and is used for many cooling and cryogenic applications. Here are some facts about liquid nitrogen and crucial information about handling it safely.
Liquid nitrogen has an extraordinarily low boiling point of -196 degrees Celsius, or -321 degrees Fahrenheit, and quickly boils at room temperature. It was that boiling action that displaced ...
Liquid nitrogen readily evaporates to form gaseous nitrogen, and hence the precautions associated with gaseous nitrogen also apply to liquid nitrogen. For example, oxygen sensors are sometimes used as a safety precaution when working with liquid nitrogen to alert workers of gas spills into a confined space.