UN 1977 (Refrigerated Liquid) ----- HAZARD SUMMARY * Nitrogen is present in the air we breathe. The health effects described in this Fact Sheet may occur at concentrations greater than 80%. * Contact with liquefied Nitrogen can cause frostbite. * Exposure to very high levels of pure Nitrogen can cause you to feel dizzy and lightheaded, and replaces Oxygen in

In this video we discuss the safe-handling procedures for liquid nitrogen in the lab. Liquid nitrogen is at a temperature of 77K (-196C or -321 F). Liquids at his temperature can cause severe ...Inhalation of nitrogen in excessive amounts can cause dizziness, nausea, vomiting, loss of consciousness, and death. Death may result from errors in judgment, confusion, or loss of consciousness that prevents self-rescue.