MATERIAL
Linde GAS,LLC (216) 642-6600
Linde Gas LLC (216) 642-6600
AGA Gas INC. SAFETY
P.O. Box 94737 WOODS BLVD
P.O. Box 94737
6055 ROCKSIDE DATA SHEET
Cleveland,94737 44101
Cleveland, Ohio 44101
P.O. BOX Ohio
www.us.lindegas.com
www.us.lindegas.com
CLEVELAND, OH 44101-4737 No. 161
PRODUCT NAME CAS #
H2 = 1333-74-0 He = 7440-59-7
2% Hydrogen in Helium
DOT I.D. No.:
UN 1956
TRADE NAME AND SYNONYMS
Compressed gas, n.o.s.
DOT Hazard Class:
Division 2.2
CHEMICAL NAME AND SYNONYMS
Formula
2 Molar % H2 in He
2 Molar % Hydrogen in Helium
ISSUE DATES AND REVISIONS Chemical Family:
Gas Mixture
Revised January 1995
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
Hydrogen and helium are simple asphyxiants (ACGIH 1994-1995). OSHA 1993 does not list a
PEL (8 Hr. TWA) for hydrogen or helium. (Continued on Page 4)
SYMPTOMS OF EXPOSURE
Effects of exposure to high concentrations so as to displace the oxygen in the air necessary for life are headache,
dizziness, labored breathing and eventual unconsciousness. Breathing mixtures of helium with adequate oxygen to
support life modifies the voice sound so that it is higher 鈥減itched.鈥?
TOXICOLOGICAL PROPERTIES
This mixture is nontoxic but the liberation of a large amount in a confined area could displace the amount of oxygen in
the air necessary to support life.
This mixture is not listed in the IARC, NTP or by OSHA as a carcinogen or potential carcinogen.
Persons in ill health where such illness would be aggravated by exposure to this mixture should not be allowed to work
with or handle this product.
RECOMMENDED FIRST AID TREATMENT
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO THIS MIXTURE.
RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS.
Inhalation: Conscious persons should be a~sisted to an uncontaminated area and inhale fresh air. Quick removal from
the contaminated area is most important. Unconscious persons should be moved to an uncontaminated area, given
assisted respiration and supplemental oxygen. Further treatment should be symptomatic and supportive.
Information contained in this material safety data sheet is offered without charge for use by technically qualified personnel at their discretion and
risk. All statements, technical information and recommendations contained herein are based on tests and data which we believe to be reliable, but
the accuracy or completeness thereof is not guaranteed and no warranty of any kind is made with respect thereto. This information is not intended
as a license to operate under or a recommendation to practice or infringe any patent of this Company or others covering any process, composition
of matter or use.
Since the Company shall have no control of the use of the product described herein, the Company assumes no liability for loss or damage incurred
from the proper or improper use of such product.
2% Hydrogen in Helium
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
None
PHYSICAL DATA
H2 - -423潞F (-252.8 C)
BOILING POINT LIQUID DENSITY AT BOILING POINT
See Page 4
He = -452.1潞F (-268.9潞C)
VAPOR PRESSURE GAS DENSITY AT 70掳F. 1 atm
@ 70潞F (21.1潞C) = above the critical temperature .01024 lb/ft3 (.16399 kg/m3)
SOLUBILITY IN WATER FREEZING POINT
H2 = -434.6潞F (-259.2潞C)
Negligible
He l Pt = -456.5潞F (-271.3潞C)
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
N/A (Gas) @ 70潞F (21.1潞C) = 0.137
Colorless, odorless gas
APPEARANCE AND ODOR
FIRE AND EXPLOSION HAZARD DATA
AUTO IGNITION TEMPERATURE
FLASH POINT (Method used) FLAMMABLE LIMITS % B VOLUME (See Page 4)
Y
N/A N/A N/A N/A
LE UEL
ELECTRICAL CLASSIFICATION
EXTINGUISHING MEDIA
Nonhazardous
Nonflammable, inert gas
SPECIAL FIRE FIGHTING PROCEDURES
If cylinders are involved in a fire, safely relocate or keep cool with water spra y.
UNUSUAL FIRE AND EXPLOSION HAZARDS
None
REACTIVITY DATA
STABILITY CONDITIONS TO AVOID
Unstable None
Stable X
INCOMPATIBILITY (Materials toavoid)
None
HAZARDOUS DECOMPOSITION PRODUCTS None
HAZARDOUS POLYMERIZATION CONDITIONS TO AVOID
May Occur
None
Will Not Occur X
SPILL OR LEAK PROCEDURES
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED
Evacuate all personnel from a ffected area. Use appropriate protective equipment. If leak is in container or container
valve, contact your closest supplier location or call the emergency telephone number listed herein.
WASTE DISPOSAL METHOD
Do not attempt to dispose of waste or unused quantities. Return in the shipping container properly labeled, with any
valve outlet plugs or caps secured and vavle protection cap in place to your supplie r. For emergency disposal
assistance, contact your (Continued on Page 4)
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2% Hydrogen in Helium
SPECIAL PROTECTION INFORMATION
Positive pressure air line with mask or self-contained breathinq apparatus should be available for
RESPIRATORY PROTECTION
(Specify type)
emergency use.
VENTILATION LOCAL EXHAUST SPECIAL
N/A
See page 4
See local exhaust MECHANICAL (Gen.) OTHER
N/A
N/A
PROTECTIVE GLOVES
Any material
EYE PROTECTION
Safety goggles or glasses
OTHER PROTECTIVE EQUIPMENT
Safety Shoes
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
DOT Shipping Name: Compressed gas, n.o.s. DOT Hazard Class: Division 2.2
DOT Shipping Label: Nonflammable Gas I.D. No.: UN 1956
SPECIAL HANDLING RECOMMENDATIONS
Use only in well-ventilated areas. Valve protection caps must remain in place unless container is secured with valve
outlet piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Use a
pressure reducing regulator when connecting cylinder to lower pressure (<3,000 psig) piping or systems. Do not heat
cylinder by any means to increase the discharge rate of product from the cylinder. Use a check valve or trap in the
discharge line to prevent hazardous back flow into the cylinder.
For additional handling recommendations, consult Compressed Gas Association鈥檚 Pamphlets P-1, P-9, P-14 and
Safety Bulletin SB-2.
SPECIAL STORAGE RECOMMENDATIONS
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked areas and
emergency exits. Do not allow the temperature where cylinders are stored to exceed 125F (52C). Cylinders should be
stored upright and firmly secured to prevent falling or being knocked over. full and empty cylinders should be
segregated. Use a 鈥渇irst in - first out鈥? inventory system to prevent full cylinders being stored for excessive periods of
time.
for additional storage recommendations, consult Compressed Gas Association鈥檚 Pamphlets P-1, P-9, P-14 and Safety
Bulletin SB-2.
SPECIAL PACKAGING RECOMMENDATIONS
This mixture is noncorrosive and may be used with any common structural material.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Compressed gas cylinders should not be refilled except by qualified producers of compressed gases. Shipment of a
compressed gas cylinder which has not been filled by the owner or with his (written) consent is a violation of Federal
Law (49CFR).
(Continued on Page 4)
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
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and others) may have specific regulations concerning the transportation, handling, storage or use of this product which will not be reflected in this
data sheet. The customer should review these regulations to ensure that he is in full compliance.
2% Hydrogen in Helium
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT: (Continued)
Oxygen levels should be maintained at greater than 18 molar percent at normal atmospheric pressure (pO2~135 torr).
PHYSICAL DATA
LIQUID DENSITY AT BOILING POINT: H2 = 4.43 lb/ft3 (70.96 kq/mt3)
He = 7.8 lb/ftt3 (125 kg/mt3)
SPILL OR LEAK PROCEDURES: (Continued)
closest supplier location or call the emergency telephone number listed herein.
SPECIAL PROTECTION INFORMATION
LOCAL EXHAUST:
To prevent accumulation of high concentrations so as to reduce the oxygen level in the air to less than 18 molar percent.
SPECIAL PRECAUTIONS
OTHER RECOMMENDATIONS OR PRECAUTIONS: (Continued)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles,
enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pick-up
type vehicles.
Hazards are associated with inhaling helium to alter the voice sound. DO NOT ALLOW THIS PRACTICE.
Reporting under SARA, Title III, Section 313 not required.
NFPA 704 No. for this mixture = 1 0 0 None
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