P-4602-F.pdf 데이터시트 (총 8 페이지) - 파일 다운로드 P-4602-F 데이타시트 다운로드

No Preview Available !

www.DataSheet4U.com
Product: Helium
P-4602-F
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
Formula: He
Chemical Family: Rare gas
Telephone:
Emergencies: 1-800-645-4633*
CHEMTREC: 1-800-424-9300*
Routine:
1-800-PRAXAIR
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
1-800-PRAXAIR (1-800-772-9247).
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.
INGREDIENT
CAS
CONCEN-
NUMBER TRATION OSHA PEL
ACGIH TLV-TWA (2002)
Helium
7440-59-7 >99%*
*The symbol > means “greater than.”
None currently established Simple asphyxiant
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: 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
concentrations.
Copyright © 1979, 1983, 1985, 1992-1993, 1995, 2003, Praxair Technology, Inc.
All rights reserved.
Revised
Page 1 of 8

No Preview Available !

www.DataSheet4U.com
Product: Helium
P-4602-F
Date: January 2003
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–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: Helium is an asphyxiant. Lack of oxygen can kill.
MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE: The toxicology and the
physical and chemical properties of helium suggest that overexposure is unlikely to aggravate existing
medical conditions.
SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH
HAZARD EVALUATION: None known.
CARCINOGENICITY: Helium is not listed by NTP, OSHA, or IARC.
4. First Aid Measures
INHALATION: Immediately remove to fresh air. If not breathing, give artificial respiration. If
breathing is difficult, qualified personnel may give oxygen. Call a physician.
SKIN CONTACT: Wash with soap and water; seek medical attention if discomfort persists.
SWALLOWING: 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. Get medical attention if discomfort persists.
NOTES TO PHYSICIAN: There is no specific antidote. This product is inert. Treatment of
overexposure should be directed at the control of symptoms and the clinical condition of the patient.
5. Fire Fighting Measures
FLASH POINT (test method):
AUTOIGNITION TEMPERATURE:
FLAMMABLE LIMITS IN AIR, % by volume:
Not applicable
Not applicable
LOWER: Not applicable UPPER: Not applicable
EXTINGUISHING MEDIA: Helium cannot catch fire. Use media appropriate for surrounding fire.
SPECIAL FIRE FIGHTING PROCEDURES: CAUTION! High-pressure gas. Evacuate all
personnel from danger area. Immediately deluge cylinders with water from maximum distance until cool;
then move them away from fire area if without risk. Self-contained breathing apparatus may be required
by rescue workers. On-site fire brigades must comply with OSHA 29 CFR 1910.156.
UNUSUAL FIRE AND EXPLOSION HAZARDS: Helium cannot catch fire. Heat of fire can build
pressure in cylinder and cause it to rupture. No part of cylinder should be subjected to a temperature
higher than 125°F (52°C). Helium cylinders are equipped with a pressure relief device. (Exceptions may
exist where authorized by DOT.)
HAZARDOUS COMBUSTION PRODUCTS: None known.
Page 2 of 8

No Preview Available !

www.DataSheet4U.com
Product: Helium
P-4602-F
Date: January 2003
6. Accidental Release Measures
STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED: CAUTION! High-pressure
gas. Helium is an asphyxiant; lack of oxygen can kill. Evacuate all personnel from danger area. Use self-
contained breathing apparatus where needed. Shut off flow if you can do so without risk. Ventilate area or
move cylinder to a well-ventilated area. Test for sufficient oxygen, especially in confined spaces, before
allowing reentry.
WASTE DISPOSAL METHOD: Prevent waste from contaminating the surrounding environment.
Keep personnel away. Discard any product, residue, disposable container, or liner in an environmentally
acceptable manner, in full compliance with federal, state, and local regulations. If necessary, call your
local supplier for assistance.
7. Handling and Storage
PRECAUTIONS TO BE TAKEN IN STORAGE: Store and use with adequate ventilation. Firmly
secure cylinders upright to keep them from falling or being knocked over. Screw valve protection cap
firmly in place by hand. Store only where temperature will not exceed 125°F (52°C). Store full and empty
cylinders separately. Use a first-in, first-out inventory system to prevent storing full cylinders for long
periods.
PRECAUTIONS TO BE TAKEN IN HANDLING: Protect cylinders from damage. Use a suitable
hand truck to move cylinders; do not drag, roll, slide, or drop. Never attempt to lift a cylinder by its cap;
the cap is intended solely to protect the valve. Never insert an object (e.g., wrench, screwdriver, pry bar)
into cap openings; doing so may damage the valve and cause a leak. Use an adjustable strap wrench to
remove over-tight or rusted caps. Open valve slowly. If valve is hard to open, discontinue use and contact
your supplier. Never apply flame or localized heat directly to any part of the cylinder. High temperatures
may damage the cylinder and could cause the pressure relief device to fail prematurely, venting the
cylinder contents. For other precautions in using helium, see section 16.
For additional information on storage and handling, refer to Compressed Gas Association (CGA)
pamphlet P-1, Safe Handling of Compressed Gases in Containers, available from the CGA. Refer to
section 16 for the address and phone number along with a list of other available publications.
8. Exposure Controls/Personal Protection
VENTILATION/ENGINEERING CONTROLS:
LOCAL EXHAUST–Use a local exhaust system, if necessary, to prevent oxygen deficiency, and in
welding, to keep hazardous fumes and gases below applicable TLVs in the worker’s breathing zone.
MECHANICAL (general)–General exhaust ventilation may be acceptable if it can maintain an
adequate supply of air and keep hazardous fumes and gases below applicable TLVs in the worker’s
breathing zone.
SPECIAL–None
OTHER–None
RESPIRATORY PROTECTION: Use air-purifying or air-supplied respirators, as appropriate, where
local or general exhaust ventilation is inadequate. Adequate ventilation must keep worker exposure below
applicable TLVs for fumes, gases, and other by-products of welding with helium. See sections 3, 10, and
16 for details. An air-supplied respirator must be used in confined spaces. Respiratory protection must
conform to OSHA rules as specified in 29 CFR 1910.134.
SKIN PROTECTION: Wear work gloves when handling cylinders; welding gloves for welding.
Page 3 of 8