Krypton

Specification    

Purity,% 99.999 99.99999
Oxygen ≤1.0 ppmv ≤0.01 ppmv
Nitrogen ≤4.0 ppmv ≤0.03 ppmv
Carbon dioxide ≤0.3 ppmv ≤0.005 ppmv
Carbon monoxide ≤0.2 ppmv ≤0.005 ppmv
Methane ≤ 0.3 ppmv ≤0.005 ppmv
Moisture ≤1.0 ppmv ≤0.02 ppmv
Xenon ≤ 0.7 ppmv ≤0.005 ppmv
Helium ≤ 0.1 ppmv ≤ 0.001 ppmv
Hydrogen ≤1.0 ppmv ≤0.005 ppmv

transportation    

DOT shipping name Krypton, compressed
DOT classification 2.2
DOT label Non-flammable gas
UN NO. UN 1056
CAS No. 7439-90-9
CGA/JIS/BS341/DIN477 580/W26-14R/NO.3/NO.6
Transport state Compressible gas

Technical Information    

Cylinder condition @ 21.1°C gas
The combustion limit in the air is not combustible
Natural temperature (°C)-
Molecular weight (g/mol) 83.8
Specific gravity (air =1) 2.894
Critical temperature (°C) -63.75
Critical temperature (psig) 783.3

Application

Krypton is mainly used in gaseous form to produce fluorescent lamps and halogen lamps in electric light sources. The high molecular weight of krypton makes the lamp have a longer working life. Krypton is also used to insulate windows to reduce heat loss. Other applications of krypton include laser gas, scientific research, and fluid sterilization lamps.