General Information
Revision date
2007-12-13
Product name
Nitrogen Dioxide
Product Synonyms
Dinitrogen tetroxide, nitrito, tetroxide in equilibrium
Chemical name
Nitrogen dioxide and dinitrogen
Icons in SDS
Company Information
company name
1-800-645-4633* Company Name: Praxair, Inc
GHS Information
Signal word
DANGER!
Section 2
SECTION 2: Hazards identification
OSHA EMERGENCY OVERVIEW DANGER! Poisonous, corrosive, oxidizing liquid and gas under pressure. May be fatal if inhaled. Can cause severe lung damage. Can cause eye and skin burns. Symptoms may be delayed. Vigorously accelerates combustion. Self-contained breathing and protective clothing must be worn by rescue workers. Under ambient conditions, this is a reddish-brown gas with an irritating odor. OSHA REGULATORY STATUS: This material is considered hazardous by the OSHA Hazard Communications Standard (29 CFR 1910.1200).
Potential health effects
Effects of a Single (Acute) Overexposure Inhalation. Overexposure may irritate the mucous membranes, sinuses, pharynx, and bronchia, with pain, headache, cyanosis, irregular respiration, choking, dizziness, and possibly pulmonary edema. Pulmonary symptoms may be delayed from 5 to 72 hours. High concentrations of vapor may cause pain, choking, bronchoconstriction, reflex slowing of the heart, and possibly asphyxiation. Lack of oxygen can kill. Skin Contact. Severe irritant; may cause burns. Prolonged or widespread skin contact may result in absorption of harmful amounts of nitrogen dioxide. Copyright © 1979, 1985, 1989, 1998, 2001, 2007, Praxair Technology, Inc. Page 1 of 10 All rights reserved. A vertical line in the left margin indicates revised or new material. Swallowing. A highly unlikely route of exposure; this product is a gas at normal temperature and pressure. May cause burns of the mouth, esophagus, and stomach. Eye Contact. May cause severe conjunctivitis, seen as marked excess redness and swelling of the conjunctiva, and corneal injury with opacification. Effects of Repeated (Chronic) Overexposure. Repeated inhalation may cause bronchitis or emphysema; repeated skin contact may cause dermatitis. Other Effects of Overexposure. None known.
Medical Conditions Generally Aggravated by Exposure
Overexposure. Inhalation may aggravate asthma and inflammatory or fibrotic pulmonary disease. Skin irritating properties may aggravate dermatitis. CARCINOGENICITY: Nitrogen dioxide is not listed by NTP, OSHA, or IARC.
Environmental effects
None known. For further information, see section 12, Ecological Information.
