Medical Air - Airgas.com

Medical Gases

Medical Air

Medical Air U.S.P.

Cylinder Color: Yellow

Air-This nonflammable, colorless, odorless gas consists of a mixture of various elements. For most practical purposes, air is considered to be composed of 79% nitrogen and 21% oxygen by volume.

Major Hazards: High Pressure

Exposure Limit: None

Fire Potential: Supports Combustion

Odor: None

Mol. Wt.: 28.975 (average)

Sp. Gr. (Air = 1) 70° F (21° C): 1

Critical Temperature: -221.2° F (-140.7° C)

Critical Pressure: 546.8 psia (38.4 kg/cm²abs)

Specific Volume: 13.3 ft³/lb at 70° F (0.813 m³/kg at 15° C)

CAS Registry No.: 25635-88-5

D.O.T. Description: Air, Compressed, 2.2, UN1002

Medical Applications: For respiratory therapy, for humidity treatments using nebulizers and as a source of pressure to power pneumatic medical devices

Valve Connection	Cylinder Size	Contents	Pressure PSIG @70°F	Nominal Gross Wt.
CGA 346 (Threaded)	300	311ft³8.62m³	2,640psig 185.7kg/cm²	166lb 75.5kg
CGA 346 (Threaded)	250	259ft³7.19m³	2,490psig 175.1kg/cm²	166lb 75.5kg
CGA 346 (Threaded)	200	233ft³6.46m³	2,200psig 185.6kg/cm²	166lb 75.5kg
CGA 346 (Threaded)	190	208ft³5.76m³	2,200psig 154.7kg/cm²	150lb 68.2kg
CGA 950 (Pin-Indexed)	ME	23.5ft³0.650m³	2,015psig 140.6kg/cm²	16.3lb 7.39kg
CGA 950 (Pin-Indexed)	EA^]	22.6ft³0.63m³	2,015psig 140.6kg/cm²	14.0lb 6.33kg
CGA 950 (Pin-Indexed)	MD	14.4ft³.400m³	2,015psig 140.6kg/cm²	10.6lb 4.8kg
CGA 950 (Pin-Indexed)	DA^]	13.8ft³	2,015psig	8.0lb

Aluminum cylinder

Purity Specifications
U.S.P. 19.5–23.5% OCO<10 ppm
Odor None detected
NO+NO<2.5 ppm
Water and Oil None detected
S0₂ <5 ppm
C0₂ <500 ppm

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