Date: January 2003
Praxair Material Safety Data Sheet
1. Chemical Product and Company Identification
Product Name: Helium, compressed (MSDS No. P-4602-F) Trade Name: Helium, Medipure™ Helium
Chemical Name: Helium
Synonyms: Helium-4, refrigerant gas R704
Chemical Family: Rare gas
Company Name: Praxair, Inc.
39 Old Ridgebury Road
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
2. Composition/Information on Ingredients
This section covers materials of manufacture only. See sections 3, 8, 11, and 16 for information on
by-products generated during use, especially use in welding and cutting.
See section 16 for important information about mixtures.
NUMBER TRATION OSHA PEL
ACGIH TLV-TWA (2002)
*The symbol > means “greater than.”
None currently established Simple asphyxiant
3. Hazards Identification
CAUTION! High-pressure gas.
Can cause rapid suffocation.
May cause dizziness and drowsiness.
Self-contained breathing apparatus may be required by rescue workers.
THRESHOLD LIMIT VALUE: Simple asphyxiant (ACGIH, 2002). ACGIH recommends a TLV-
TWA of 5 mg/m3 for welding fumes not otherwise classified (NOC) that may be generated during
welding with this product. See section 16 for more information on welding hazards. TLV-TWAs should
be used as a guide in the control of health hazards and not as fine lines between safe and dangerous
Copyright © 1979, 1983, 1985, 1992-1993, 1995, 2003, Praxair Technology, Inc.
All rights reserved.
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