Ne-Neon
CAS No.: 7439-90-9
EINECS No.: 231-098-5
UN No.: UN1950
Purity: 99.99%-99.999%
Dot Class: 2.2 Non-flammable gas
Appearance: Colorless, odorless gas
Krypton is a chemical element; it has symbol Kr and atomic number 36. It is a colorless, odorless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Krypton is chemically inert. Krypton, like the other noble gases, is used in lighting and photography.
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.
| Project | Index | ||
| high-purity krypton | pure krypton | ||
| First-class products | Qualified products | ||
| Krypton (Kr) purity (volume fraction)/10-2 ≥ | 99.999 | 99.995 | 99.99 |
| Nitrogen(N2)purity(volume fraction)/10-6 ≤ | 2 | 8 | 20 |
| Oxygen(O2)and Argon (Ar) purity(volume fraction)/10-6 ≤ | 1.5 | 5 | 5 |
| Hydrogen(H2)purity(volume fraction)/10-6 ≤ | 0.5 | 1 | 2 |
| Carbon monoxide (CO)purity(volume fraction)/10-6 ≤ | 0.3 | 0.4 | 1 |
| Carbon dioxide (CO2)purity(volume fraction)/10-6 ≤ | 0.4 | 0.8 | 1 |
| Methane (CH4)purity(volume fraction)/10-6 ≤ | 0.3 | 0.8 | 1 |
| Water (H20) content (volume fraction)/10-6 ≤ | 2 | 3 | 5 |
| Xenon (Xe) content (volume fraction)/10-6 ≤ | 2 | 20 | 50 |
| Fluoride (C2F6) content (volume fraction)/10-6 ≤ | 1 | 10 | 15 |
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