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. 174
H2 = 133-74-0 CO2=124-38-9
Less Than 3% Hydrogen and Less Than 25%
PRODUCT NAME CAS #
Ar = 7440-37-1
Carbon Dioxide in Argon
DOT I.D. No.:
UN 1956
TRADE NAME AND SYNONYMS
Compressed Gas, N.O.S. (D.O.T.)
DOT Hazard Class:
Division 2.2
CHEMICAL NAME AND SYNONYMS
<3 Molar 鈥?% Hydrogen and <25
<3Molar % H2 and <25 Molar %
Formula
Molar % Carbon Dioxide in Argon
CO2 in Ar
ISSUE DATES AND REVISIONS Chemical Family:
Gas Mixture
May 1998
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
These gas mixtures contain varying quantities of gaseous carbon dioxide.
Carbon dioxide has a TWA of 5,000 Molar PPM. Its STEL is 30,000 Molar PPM (Continued on Page 4)
SYMPTOMS OF EXPOSURE
Concentrations of 20-30 percent of these mixtures when inhaled with adequate oxygen in the air will cause an increase
in the respiratory rate. Iligher concentrations will cause headache, nausea and eventual unconsciousness.
TOXICOLOGICAL PROPERTIES
Carbon dioxide is the most powerful cerebral vasodilator known. Inhaling large concentrations causes rapid circulatory
insufficiency leading to coma and death. Chronic harmful effects are not known from repeated inhalation of low
(20-30%) concentrations of these mixtures.
Neither carbon dioxide, hydrogen or argon are listed in the IARC, NTP or by OSHA as a carcinogen or potential
carcinogen.
Persons in ill health where such illness would be aqgravated by exposure to these mixtures should not be allowed to
work witb or hand|e thes e products.
RECOMMENDED FIRST AID TREATMENT
RECOMMENDED FIRST AID TREATMENT PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF
OVEREXPOSURE TO THESE MIXl-URES. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-
CONTAINED BREATHING APPARATUS.
Inhalation: Conscious persons should be assisted 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.
Iess Than 3鈥?% Hydrogen and Les s Than 25% Carbon Dioxide i n Argon
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
None
PHYSICAL DATA
BOILING POINT LIQUID DENSITY AT BOILING POINT
See Page 4 See Page 4
VAPOR PRESSURE GAS DENSITY AT 70掳F. 1 atm
.1336 1b/ft3 (2.141 kg/m3)
See Page 4
SOLUBILITY IN WATER FREEZING POINT
See Page 4 See Page 4
@ 70潞F (21. 1C) H2=.07
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
N/A (Gas) CO2 - 1.65; Ar = 1.38
Colorless, odorless gas
APPEARANCE AN ODOR
D
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
Nonflammable gas mixture
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
X
Stable
INCOMPATIBILITY (Materials to avoid) None
HAZARDOUS DECOMPOSITION PRODUCTS None
HAZARDOUS POLYMERIZATION CONDITIONS TO AVOID
May Occur
None
Will Not Occur N
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 use r鈥檚 equipment, be
certain to purge piping with an inert gas prior to attempting repairs. 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 valve protection cap in place to your supplie r. For emergency disposal
assistance, contact your closest supplier location or call the emergency telephone number listed herein.
2
Less Than 3掳% Hydrogen and Less Than 25% Carbon Dioxide
SPECIAL PROTECTION INFORMATION
Positive pressure air line with mask or self-contained breathing apparatus shou ld be available for
RESPIRATORY PROTECTION
(Specify type)
emergency use. (Continued on Page 4)
VENTILATION LOCAL EXHAUST SPECIAL
N/A
See Page 4
See Local Exhaust MECHANICAL (Gen.) OTHER
N/A
N/A
PROTECTIVE GLOVES
As required when welding. See Other Protective Equipment
EYE PROTECTION
Safety goggles or glasses. When welding, wear helmet or use face. (Continued on page 5)
OTHER PROTECTIVE EQUIPMENT
Safety shoes and appropriate head and eye protection when welding. (Continued on page 5)
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.: UN1956
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, drop 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. Keep cylinder away from heat and flame. Do not
tamper with (valve) safety device. Close valve after each use and when empty. See NFPA Pamphlet 51A 鈥淲elding and
Cutting鈥? for additional information.
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 recommendations consult Compressed Gas Association鈥檚 Pamphlet P-1.
SPECIAL PACKAGING RECOMMENDATIONS
These mixtures are noncorrosive and may be used with anv common structc!ral 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 5)
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
3
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.
Less Than 3% Hydrogen and Less Than 25% Carbon Dioxide in Argon
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT: (Continued)
(ACGIH 1997). OSHA 1995 PEL (8 hr. TWA) for CO2 = 5,000 Molar PPM. Argon and Hydrogen are simple
asphyxiants(ACGIH 1997) with no listing for either by OSHA.
PHYSICAL DATA - (Continued)
BOILING POINT:
H2 = -422.9掳F (-252.8掳C)
CO2 Sublimation Point = -109.3掳F (-78.5掳C)
Ar = -302.6掳F (-185.9掳C)
VAPOR PRESSURE @ 70掳F (21.1掳C):
H2 = Above the critical temperature of -399.8掳F (-239.9掳C)
CO2 = 856 psia (5900kPa)
Ar = Above the critical temperature of -188.1掳F (-122.3掳C)
SOLUBILITY IN WATER:
N2 = Negligible
C02 = Soluble
Ar = Negligible
LIQUID DENSITY AT BOILING POINT:
= 4.42 1b/ft3 (70.80 kg/m3)
H2
= 97.5 lb/ft3 (1562 kg/m3)
CO2 Solid Density
= 87 1b/ft3 (1393 kg/m3)
Ar
FREEZING POINT:
H2 = -434.5掳F (-259.2掳C)
CO2 = -69.8掳F (-56.6掳C) @ 75.1 psia (518 kPa)
Ar = -308.9掳F (-189.4掳C)
SPECIAL PROTECTION INFORMATION
RESPIRATORY PROTECTION: (Continued)
When welding in confined space or where local exhaust or ventilation does not keep exposure below welding fume TLV,
use positive pressure air line with mask or selfcontained breathing apparatus.
LOCAL EXHAUST:
To prevent accumulation of high concentrations of gases so as to reduce the oxygen level in the air to less than 18 molar
percent. When welding, use enough ventilation, local exhaust at the arc, or both, to keep the welding fumes and gases
below the applicable TLVs in the worker鈥檚 breathing zone and the general area. Train the welder to keep his head out of
the fumes.
4
Less Than 3% llydrogen and Less Than 25鈥?% Carbon Dioxide in Argon
SPECIAL PROTECTION INFORMATION - (Continued)
EYE PROTECTION: (Continued)
shield with filter lens. As a general rule, start with a shade which is too dark to see the weld zone. Then go to the next
lighter shade which gives sufficient view of the weld zone. Provide protection screens and flash goggles, if necessary, to
shield others from arc rays radiation which can injure eyes and burn skin.
OTHER PROTECTIVE EQUIPMENT: (Continued)
When welding, wear head, hand and body protection which help to prevent injury from radiation, sparks and electrical
shock. See ANSI Z-49.1. At a minimum, this includes welder鈥檚 gloves and a protective face shield and may include arm
protectors, aprons, hats, shoulder protection, as well as dark substantial clothing. Train the welder not to touch live
electrical parts and to insulate himself from work and ground.
CAUTION: Welding or brazing may produce fumes and gases hazardous to health. Short-term (acute)overexposure to
welding fumes may result in discomfort such as: dizziness, nausea, or dryness or irritation of nose, throat, or eyes.
Long-term (chronic) overexposure may lead to siderosis (iron deposits in the lungs) and is believed by some investigators
to affect pulmonary function. Arc rays can injure eyes and burn skin. Electric shock can kill. Avoid breathing these fumes
and gases. Use adequate ventilation. See ANSI Z-49.1 鈥淪afety in Welding and Cutting鈥? published by tl~e American
Welding Society.
Consult hazard warnings on boxes or containers (or on tags or labels thereon) containing brazing or welding filler metals,
fluxes and fusible granular materials. See OSHA safety regulations under 29CFR 1910.252 鈥淲eldinq, Cutting and
Brazing.鈥? Also see ACGIII 鈥淭LVs (1997) for Chemical Substances in the Work Environment,鈥? Appendix B, Section B2
鈥淲elding Fumes鈥? (Total Particulate TLV-TWA, 5 mg/m3) for further information.
Consult manufacturer鈥檚 material safety data sheet on welding consumables and related products for reactivity and health
hazard data, and for further information regarding welding fumes.
SPECIAL PRECAUTIONS
OTHER RECOMMEND/\TIONS OR PRECAUTIONS: (Continued)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks or vehicles,
enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pick-up
type vehicles.
Reporting under SARA, Title III, Section 313 not required.
NFPA 704 NO. for these mixtures = 1 0 0 None
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