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Krypton (Kr)
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Basic info:
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English name
Krypton
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CAS
7439-90-9
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Hazard info
1056(compressed), 1970(liquid)
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Transport
"ADR Class 2, 1A"
ADR Class 3A
Properties:
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Molar mass
83.8
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Gas density at 15°С/1,013 bar
3.552
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Boiling point at 1,013 bar
-153.35
Options
- single-piece
2 l5 l10 l40 l — 150 bar
50 l (200) — 200 bar
- Cylinders 2 l, 5 l, 10 l (DIN 6 (W21.6x1/14'')) DIN 6 (W21.6x1/14'')
- Cylinder(s) 5 l, 10 l, 40 l, 50 l and monoblocks ( DIN 9 (G 3/4)) DIN 9 (G 3/4)
- DOT Cylinder 50 l CGA 580 CGA 580
Brass single-stage for
pure gases with stainless
membrane
Specs
| Krypton 6.0 | ||
|---|---|---|
| Composition | ||
| Kr | % | ≥99,9999% |
| Admixture | ||
| H2 | ppmv | <0,02 |
| N2 | ppmv | <0,1 |
| O2 | ppmv | <0,05 |
| CF4 | ppmv | <0,01 |
| C2F6 | % | <0,01 |
| SF6 | % | <0,01 |
| N2O | % | <0,01 |
| CH4 | ppmv | <0,01 |
| CO2 | ppmv | <0,01 |
| Xe | ppmv | <0,01 |
| H2O | ppmv | <0,3 |
| C2H6 | ppmv | <0,01 |
Krypton is a monoatomic odorless, tasteless and colorless gas. It is obtained as a by-product in the form of a krypton-xenon mixture during the air separation process in industrial plants.
In the process of air separation by low-temperature fraction distillation, liquid oxygen fraction containing liquid hydrocarbons, krypton and xenon is continuously distilled (the oxygen with hydrocarbons fraction removal by distillation is necessary to ensure explosion safety).
- Colorless gas
- Tasteless and odorless
- Three times heavier than air
- Non-toxic gas
- Has a suffocating effect
- Narcotic effect on the body
In the production of high-power excimer lasers (Kr-F). For filling incandescent lamps, increasing the lifespan of the filament. As oxidizers for rocket fuel. In the production of heat-resistant windows and portholes.
In medicine, krypton isotopes are used for visualizing airways in MRI and for lung ventilation/perfusion. In liquid form, the element is used for constructing quasi-homogeneous electromagnetic calorimeters in experimental particle physics, but it is often replaced by the less expensive argon.
Chemical industry 
Electronics 
Astronautics 
Medicine 
Construction The transportation of cylinders must be carried out in a horizontal position with spacers between the cylinders or in a vertical position, with mandatory protection against possible falling. Transportation in packaged form in special containers is allowed.
Joint transportation with oxygen cylinders is not allowed.
Transportation/movement must comply with the codes of the relevant type of transport, federal laws, other regulations, and the legislation of the country where the transportation/movement/transshipment is taking place.
Can be transported by
- train
- truck
- ship