Nitrogen, refrigerated liquid

SECTION 2: Hazards identification

OSHA EMERGENCY OVERVIEW WARNING! Extremely cold liquid and gas under pressure. Can cause rapid suffocation. Can cause severe frostbite. May cause dizziness and drowsiness. Self-contained breathing apparatus and protective clothing may be required by rescue workers. Under ambient conditions, this is a colorless, odorless, cryogenic liquid.

Potential health effects

Effects of a Single (Acute) Overexposure Inhalation. Asphyxiant. Effects are due to lack of oxygen. Moderate concentrations may cause headache, drowsiness, dizziness, excitation, excess salivation, vomiting, and unconsciousness. Lack of oxygen can kill. Skin Contact. No harm expected from vapor. Cold gas or liquid may cause severe frostbite. Swallowing. An unlikely route of exposure, but severe frostbite of the lips and mouth may result from contact with the liquid. Eye Contact. No harm expected from vapor. Cold gas or liquid may cause severe frostbite. Effects of Repeated (Chronic) Overexposure. No harm expected. Other Effects of Overexposure. Asphyxiant. Lack of oxygen can kill. Copyright © 1979, 1983, 1985, 1992, 1997, 1998, 2001, 2004, 2007, Praxair Technology, Inc. Page 1 of 10 All rights reserved. A vertical line in the left margin indicates revised or new material.

Medical Conditions Generally Aggravated by Exposure

Overexposure. The toxicology and the physical and chemical properties of nitrogen suggest that overexposure is unlikely to aggravate existing medical conditions.

Environmental effects

None known. For further information, see section 12, Ecological Information.