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Carbon monoxide

Carbon monoxide

description
 Carbon monoxide (CO) is a colorless, odorless, combustible gas.

specification
purity,% 99.5 99.95 99.997
oxygen ≤100ppm ≤150ppm ≤ 3 ppm
Nitrogen ≤800ppm ≤250ppm ≤20ppm
carbon dioxide ≤500ppm ≤20ppm ≤ 5 ppm
Total hydrocarbon ≤3000ppm ≤10ppm ≤5 ppm
Moisture ≤50ppm ≤15ppm ≤3ppm
hydrogen ≤400ppm ≤10ppm ≤1ppm

transport
DOT shipping name Carbon monoxide, compressed
DOT classification 2.3
DOT tag Harmful by inhalation, flammable gas
UN NO. UN1016
CAS NO. 630-08-0
CGA/DISS /JIS/BS341/DIN477 350/724/W22-14L/NO.4/NO.5
Transportation status Compressible gas

Technical Information
Cylinder condition @ 21.1°C  gas
Burning limit in the air 12.5–74 %
Auto-ignition temperature ( °C ) 700
Molecular weight ( g / mol ) 28.01
Specific gravity (air =1) 0.967
Critical temperature ( °C ) -140.23
Critical pressure ( psig ) 470.85

application
- used as a feed gas for the preparation of standard gas for environmental monitoring systems; 
- in semiconductor manufacturing: together with C4F8 in metal carbonyl, selective oxidation etching;

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