MATERIAL
Linde Gas LLC (216) 642-6600
Linde Gas LLC
AsGA GAS, INC. (216) 642-6600 SAFETY
P.O. Box 94737
P.O. Box 94737 WOODS BLVD
6055 ROCKSIDE DATA SHEET
Cleveland, Ohio 44101
Cleveland, Ohio 44101
P.O. BOX 94737
www.us.lindegas.com
www.us.lindegas.com
CLEVELAND, OH 44101-4737 No. 173
PRODUCT NAME CAS #
02 - 7782-44-7 Ar = 7440- 37- 1
19 - 30% Oxygen in Argon
DOT I.D. No.:
UN 1980
TRADE NAME AND SYNONYMS
Rare Gas and Oxygen Mixture, Compressed (D.0.T. )
DOT Hazard Class:
Division 2.2
CHEMICAL NAME AND SYNONYMS
Formula
19 - 30 Molar % O2 in Ar
19 - 30 Molar % Oxygen in Argon
ISSUE DATES AND REVISIONS Chemical Family:
Gas Mixture
May 1998
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
No TWA is established for Oxygen; Arpon is a simple asphyxiant (ACGIH 1997). 0SHA 1995 PEL (8 hr. TWA) = no
listing for 0xygen or Argon.
SYMPTOMS OF EXPOSURE
These mixtures should be considered similar to air.
TOXICOLOGICAL PROPERTIES
Neither oxygen or argon are listed in the IARC, NTP or by OSHA as a carcinogen or
potential carcinogen .
Persons i n ill heal th where such illness would be aggravated by exposure to thest mixtures should not be allowed to
work with or handle these products.
RECOMMENDED FIRST AID TREATMENT
None
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.
19 - 30% Oxygen i n Argon
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
Contact with all flammable material should be avoided. Some materials which are not flammable in air will burn in
oxygen-rich atmospheres.
PHYSICAL DATA
BOILING POINT LIQUID DENSITY AT BOILING POINT
See Page 5
O2 = -297.3潞F (-182.9潞C) Ar = -302.6潞F (-185.9潞C)
VAPOR PRESSURE GAS DENSITY AT 70掳F. 1 atm
See Page 5 See Page 5
SOLUBILITY IN WATER FREEZING POINT
O2 = -361 .8潞F ( -218.8潞C) Ar = -308. 9潞F ( -189. 4潞C )
Very slightly
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
N/A (Gas) @ 70潞F (21.1潞C) = O2 = 1.11; Ar = 1.38
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
Non hazardous
.Copious quantities of water for fires with oxygen rich atmospheres as the oxidizer
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
High oxygen content mixtures vigorously accelerate combustion.
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 emerqency 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 listed herein.
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19 - 30% Oxygen in Argon
SPECIAL PROTECTION INFORMATION
None
RESPIRATORY PROTECTION
(Specify type)
VENTILATION LOCAL EXHAUST SPECIAL
N/A
To prevent oxygen accumulations above 25 Molar %
See Local Exhaust MECHANICAL (Gen.) OTHER
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 4)
OTHER PROTECTIVE EQUIPMENT
Safety shoes and appropriate head and eye protection when welding. (Continued on Page 4)
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
DOT Shipping Name: Rare Gas and Oxygen Mixture, Compressed DOT Hazard Class: Division 2.2
DOT Shipping Label: See Note on page 4. I.D. No. UN 1980
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.
For additional recommendations consult Compressed Gas Association鈥檚 Pamphlet P-1.
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 125潞F (52潞C). 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? inventoy system to prevent full cylinders being stored for excessive periods of
time.
For additional recommednations consult Compressed Gas Assocation鈥檚 Pamphlet P-1.
SPECIAL PACKAGING RECOMMENDATIONS
Carbon steels and low alloy steels are acceptable for use at lower pressure. For high pressure applications use
stainless steels, copper and its alloys, nickel and its alloys, brass, bronze, silicon alloys, Monel庐, Inconel庐 or beryllium.
Lead and silver or lead and tin alloys are good gasketing materials. Teflon庐 and Kel-F庐 are the preferred non-metal
gaskets.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Equipment to contain high oxygen content mixtures must be 鈥渃leaned for oxygen service.鈥? See Compressed Gas
Association Pamphlet G-4.1. 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). 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. (Continued on Page 4)
*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.
19 - 30% Oxygen in Argon
SPECIAL PROTECTION INFORMATION
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 siderosus (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 the
American Welding Society. Transport cylinders secured in open flatbed or in open pick-up vehicles.
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elding, Cutting and
Brazing.鈥? Also see ACGIH 鈥淭LVs (1997) for Chemical Substances in the Work Environmen3 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.
Reporting under SARA, Title III, Section 313 not required.
NFPA 704 No. for these mixtures = 1 0 0 Ox
OTHER RECOMMENDATIONS OR PRECAUTIONS: - (Continued)
Transport cylinders secured in open flatbed or in open pick-up type vehicles.
DOT Shipping Label(s) Note: Requires Nonflammable Gas Label and if Oxygen content of mixture is above 23.5 Molar%
also requires an Oxidizer Label.
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19 - 30% Oxygen in Argon
PHYSICAL DATA -(Continued)
LIQUID DENSITY AT BOILING POINT: O2 = 71.23 LB/ft3 (1141 kg/m3)
AR = 87 lb/ft3 (1393 kg/m3 )
VAPOR PRESSURE: @ 70潞F (21.2潞C) = Above the critical temperature of:
02 = -181.1潞F (-118.4潞C)
Ar = -188.1潞F (-122.3潞C)
GAS DENSITY AT 70潞F, 1 atm: O2 = .0828 1b/ft3 (1.326 kg/m3)
Ar = .1034 lb/ft3 (1.656 kg/m3 )
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