Krypton, Kr »  
KRYPTON Gas Purity 99,999%
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83.8 g/mol
Rare gas

Krypton is used in the fanciest, most energy-efficient double-pane insulated windows. Krypton is also used in certain fluorescent lamps and in a flash lamp employed in high-speed photography. Radioactive krypton-85 is useful for detecting leaks in sealed containers, with the escaping atoms detected by means of their radiation.

Typical Level of Impurities

Hydrogen H2 ppm 1,0
Nitrogen N2 ppm 2,0
Oxygen O2 ppm 0,5
Argon Ar ppm 1,0
Xenon Xe ppm 1,0
Carbon oxide CO ppm 0,5
Carbon dioxide CO2 ppm 0,5
Moisture H20 ppm 1,0
Hydrocarbons CnHm ppm 0,5
Sulfur hexafluoride SF6 ppm 0,5
Halocarbon 14 CF4 ppm 0,5
Halocarbon 116 C2F6 ppm 0,5

Physical constants

Chemical Formula Kr
Molecular weight 83,8
Denseness of gas at + 20°C 3,494 kg/m3
Denseness of gas at + 0°C 3,7493 kg/m3
Temperature of boiling -153,22°C (119.78°K)
Denseness of a liquid 2410 kg/m3
Latent heat of vaporization 9095 Joule/mole
Temperature and pressure a triple point -157,23°C (115.77°K)
Volume of gas for want of evaporation 1l of a liquid (0°C) 643 litreses
Temperature -63,61°C (209.39°K)
Pressure 54,25 technical atmosphere
Denseness 911,5 Kg/m3

Information about cylinders

Type of cylinder Bulk, ltr. Type of a valves Net weight, kg Amount of a Krypton, ltr.
B2 2 DIN 477/6 0,7 200
B5 5 DIN 477/6 3,49 1.000
B10 10 DIN 477/6 6,99 2.000
B50 50 DIN 477/6 34,94 10.000

Transport data

Chemical Symbol Kr
CAS Registry ID 7439-90-9
DOT Classification Non-inflammable gas
DOT Label Non-inflammable gas
Hazard class 2.2
UN Number (oblate gas) UN 1056
Main Dangers High Pressure and asthma
Toxility (TLV) Non-toxic gas (asthma)
Range of Flammability (in an air) Non-inflammable gas
Odor Without an odor
Xenon, Xe »
Neon, Ne »
Helium, He »
Argon, Ar »
Laser Gas, XeNe »
Laser Gas, KrNe »
Laser Gas, ArXeNe »
Laser Gas, NeH2 »
Excimer Laser Gases
XeCl, XeF, ArF, KrF   »