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85 - Air

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MATERIAL SAFETY DATA SHEETNational Welders P.O. Box 31007Charlotte, NC 28231, 704-333-5475Emergency Telephone: 800-866-4422ChemTrec: 800-424-9300MAJOR SUPPLIERS OF CRYOGENICS AND WELDING EQUIPMENTN0000502MSDS #Issue/Revision Date: 01-Jul-98SECTION 1. MATERIAL IDENTIFICATIONProduct NameCompressed AirCAS #N/ANFPA CODE 704/ HMISHealth0Fire0Reactivity0Special HazardNONETrade Name And SynonymCompressed Air; Air; Compressed Air, Breathing QualityDOT Identification NoUN-1002Chemical Name And SynonymsAir, Compressed (D.O.T.)DOT Hazard ClassDivision 2.2FormulaSee "Special Notes" sectionChemical FamilyN/ADescriptionCompressed AirTime Weighted Average Exposure LimitNo TWA established (ACGIH 1995-1996). No PEL (8 Hr. TWA) listed by OSHA 1993.Symptoms Of ExposureAir is nontoxic and necessary to support life. Inhalation of air in a high pressure environment such as underwater diving, caissons or hyperbaric chambers can result in symptoms similar to overexposure to pure oxygen. These include tingling of fingers and toes, abnormal sensations, impaired coordination and confusion. Decompression sickness, pains or "bends" are possible following rapid decompression.Toxicological PropertiesHigh pressure effects (greater than two atmospheres of oxygen) are on the central nervous system. Improper decompression results in the accumulation of nitrogen in the blood.Air 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 high pressure air, should not be allowed to work with or handle this product.Recommended First Aid TreatmentFacilities or practices at which air is breathed in a high pressure environment should be prepared to deal with the illnesses associated with decompression (bends or caisson disease). Decompression equipment may be required.SECTION 3. PHYSICAL DATABoiling Point-317.8°F (-194.3°C)Liquid Density at Boiling Point54.56 lb/ft3 (874 kg/m3)Vapor Pressure @ 70° F (21.1°C)(21.1°C): Above the critical temp. of -221.1°F (-140.6°C)Solubility In WaterVery slightlyGas Density at 70°F 1 ATM.0749 lb/ft3 (1.200 kg/m3)Freezing PointN/A (Gas Mixture)SECTION 2. HEALTH HAZARD INFORMATIONPage 1 of 4N0000502MSDS #Issue/Revision Date: 01-Jul-98Evaporation RateN/A (Gas)Specific Gravity (AIR = 1)@ 70°F (21.1°C) = 1.0Appearance And OdorColorless, odorless gasSECTION 4. FIRE AND EXPLOSION HAZARD DATAFlash PointN/AAuto Ignition TemperatureN/AExtinguishing MediaNonflammable gasSpecial Firefighting ProcedureIf cylinders are involved in a fire, safely relocate or keep cool with water spray.Hazardous Mixtures Of Other Liquids,Solids or GasesN/AFlammable Units Percent by VolumeN/A N/AElectrical ClassificationNonhazardousUnusual Fire and Explosion HazardsCompressed air at high pressures will accelerate the burning of materials to a greater rate than they burn at atmospheric pressure.SECTION 5. REACTIVITY DATAUnstableStableConditions To AvoidNoneStabilityMay Occur Will Not OccurHazardous Polymerization Conditions To AvoidNoneIncompatibility; (Materials to Avoid)NoneHazardous Decomposition ProductsNoneSECTION 6. SPILL, LEAK AND DISPOSAL PROCEDURESSteps to be taken in Case Material is Released or SpilledN/AWaste DisposalN/ASECTION 7. SPECIAL PROTECTION INFORMATIONRespiratory ProtectionN/AVentilationN/ALocal ExhaustN/AMechanicalN/ASpecialN/AOtherN/AProtective GlovesAny materialEye ProtectionSafety goggles or glassesOther Protective EquipmentSafety shoesSpecial Labeling InformationDOT Shipping Name: Air, Compressed DOT Hazard Class: Division 2.2DOT Shipping Label: Nonflammable Gas I.D. No.: UN 1002SECTION 8. SPECIAL PRECAUTIONS AND COMMENTSLELUELPage 2 of 4N0000502MSDS #Issue/Revision Date: 01-Jul-98Special Handling RecommendationsValve 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 the Compressed Gas Association Pamphlets P-1, G-7, and G-7.1.Special Storage RecommendationsProtect 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°F (52 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 "first in - first out" inventory system to prevent full cylinders from being stored for excessive periods of time.For additional storage recommendations, consult the Compressed Gas Association Pamphlets P-1, G-7, and G-7.1.Special Packaging RecommendationsDry air is noncorrosive and may be used with all materials of construction. Moisture causes metal oxides which are formed with air to be hydrated so that they increase in volume and lose their protective role (rust formation). Concentrations of S02, Cl2, salt, etc. in the moisture enhances the rusting of metals in air.Other Recommendations or PrecautionsCompressed 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).Special NotesReporting under SARA, Title III, Section 313 not required.Formulas continued:Atmospheric air which is compressed is composed of the following concentrations of gases:GAS MOLAR %Nitrogen 78.09Oxygen 20.94Argon 0.93Carbon Dioxide 0.033*Page 3 of 4N0000502MSDS #Issue/Revision Date: 01-Jul-98Neon 18.18 x 10 -4Helium 5.239 x 10 -4Krypton 1.139 x 10 -4Hydrogen 0.5 x 10 -4Xenon 0.086 x 10 -4Radon 6 x 10 -18 Water vapor Varying concentrations* Concentrations may have slight


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