Friday, April 30, 2004

NITROGEN (N₂) Praxair Material Safety Data Sheet

1. Chemical Product and Company Identification

Product Name: Nitrogen, compressed (MSDS No.

P-4631-F)

Trade Name: Nitrogen

Chemical Name: Nitrogen Synonyms: Dinitrogen

Formula: N2 Chemical Family: Permanent gas

Telephone: Emergencies: 1-800-645-4633* Company Name: Praxair, Inc.

CHEMTREC: 1-800-424-9300* 39 Old Ridgebury Road

Routine: 1-800-PRAXAIR Danbury, CT 06810-5113

* Call emergency numbers 24 hours a day only for spills, leaks, fire, exposure, or accidents involving this

product. For routine information, contact your supplier, Praxair sales representative, or call

1-800-PRAXAIR (1-800-772-9247).

2. Composition/Information on Ingredients

See section 16 for important information about mixtures.

INGREDIENT CAS NUMBER CONCENTRATION OSHA PEL

Nitrogen 7727-37-9 >99% * None currently established

ACGIH MTLV-TWA (2001)

Simple asphyxiant

* The symbol > means “greater than”; the symbol <, “less than.”

3. Hazards Identification

EMERGENCY OVERVIEW

CAUTION! High-pressure gas.

Can cause rapid suffocation.

May cause dizziness and drowsiness.

Self-contained breathing apparatus may be required by rescue workers.

Odor: None

THRESHOLD LIMIT VALUE: TLV-TWA, simple asphyxiant (ACGIH, 2001). TLV-TWAs should

be used as a guide in the control of health hazards and not as fine lines between safe and dangerous

concentrations.

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.

SWALLOWING–An unlikely route of exposure. This product is a gas at normal temperature and

pressure.

EYE CONTACT–No harm expected.

EFFECTS OF REPEATED (CHRONIC) OVEREXPOSURE: No harm expected.

OTHER EFFECTS OF OVEREXPOSURE: Asphyxiant. Lack of oxygen can kill.

MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE: The toxicology and the

physical and chemical properties of nitrogen suggest that overexposure is unlikely to aggravate existing

medical conditions.

SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH

HAZARD EVALUATION: None known.

CARCINOGENICITY: Nitrogen is not listed by NTP, OSHA, or IARC.

4. First Aid Measures

INHALATION: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult,

qualified personnel may give oxygen. Call a physician.

SKIN CONTACT: Flush with water. If discomfort persists, seek medical attention.

SWALLOWING: An unlikely route of exposure. This product is a gas at normal temperature and

pressure.

EYE CONTACT: Flush eyes thoroughly with water. Hold the eyelids open and away from the eyeballs

to ensure that all surfaces are flushed thoroughly. If discomfort persists, seek medical attention.

NOTES TO PHYSICIAN: There is no specific antidote. Treatment of overexposure should be directed

at the control of symptoms and the clinical condition of the patient.

5. Fire Fighting Measures

6. Accidental Release Measures

7. Handling and Storage

8. Exposure Controls/Personal Protection

9. Physical and Chemical Properties

10. Stability and Reactivity

11. Toxicological Information

12. Ecological Information

13. Disposal Considerations

14. Transport Information

15. Regulatory Information

16. Other Information