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Formula: Kr

A colorless, odorless, nonflammable, inert gas

Applications

  • A major use is in the lighting industry. Used in incandescent lamps, mixed with nitrogen and argon or nitrogen, argon and xenon. Used in mixtures with argon as a filling gas for fluorescent tubes. Used as a filling gas for various halogen lamps, such as those used in cars, on airfields and in low voltage display lamps.
  • Used to obtain brain X-ray pictures.
  • Used as a triggering agent in discharge type electronic tubes.
  • Used as an insulation gas in windows to reduce noise and heat transfer.
  • Used for certain ion and excimer lasers.
  • Krypton is also used for mass spectrometry and specific area measurements in adsorption applications.

Nitrogen < 15 ppmv< 4 ppmv

Grade 4 Grade 4.5 Grade 5
Purity 99.99% 99.995% 99.999%
Air (N2+O2+CO+CO2) < 40 ppmv
Oxygen < 2 ppmv < 0.5 ppmv
Carbon Monoxide < 1 ppmv < 0.5 ppmv
Carbon Dioxide < 1 ppmv < 0.5 ppmv
Moisture < 10 ppmv < 2 ppmv < 2 ppmv
Total Hydrocarbons < 1 ppmv < 0.5 ppmv
Xenon < 20 ppmv < 2 ppmv
CF4 < 50 ppmv < 0.1 ppmv
Sulfur Hexafluoride < 0.1 ppmv
Halocarbon 116 < 0.1 ppmv

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
Product sold on the basis of total impurities. Individual impurities may vary slightly.

Chemical & Physical Properties
Molecular Weight 83.80
Specific Volume 4.6 cu.ft/lb
Pressure @ 70 deg 2400 psia
Valve Outlet CGA 580

 

Shipping Data
DOT Name Krypton
Hazard Class 2.2
DOT No. UN 1056
DOT Label Green, non-flammable gas
CAS No. 74390-90-0
Cylinder Size Fill Volume (L)
49L/Size 300 10,000
44L/Size 200 7000
16L/Size 80 2000
7L/Size 35 500