High Purity Krypton Gas (Kr) Rare Gases
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Krypton (Kr) is a noble gas, with the element symbol Kr, and is located in the 18th group of the periodic table. It is a colorless, odorless, and tasteless gas that occurs naturally in the Earth's atmosphere. Known for its inert chemical properties, krypton is monoatomic and does not typically form compounds under normal conditions. Here is a detailed overview of the physical properties of krypton:
Atomic and Molecular Properties
Chemical Symbol |
Kr |
Atomic Number |
36 |
Atomic Mass |
83.798 u (unified atomic mass units) |
Phase at Room Temperature |
Gas |
Molecular Structure |
Monoatomic |
Physical Properties
Density |
Gas |
3.736 g/L at 0°C and 1 atm |
Liquid |
2.47 g/cm³ at its boiling point (-153.3°C) |
|
Solid |
2.29 g/cm³ at -196°C |
|
Melting Point |
-157.39°C (-249.1°F) |
|
Boiling Point |
-153.3°C (-248.94°F) under 1 atm pressure |
|
Triple Point |
-157.39°C (-249.1°F) |
|
Critical Temperature |
-45.5°C (-67.9°F) |
|
Critical Pressure |
54.9×10^5 Pa (8.01 atm) |
|
Critical Density |
0.375 g/L |
|
Optical Properties
Krypton emits a bright white light when electrified, which is why it is used in certain types of lighting, including high-intensity discharge lamps and some types of neon signs. It also has a high ionization potential, which contributes to its use in electrical components.
Other Physical Characteristics
Refractive Index: Krypton has a relatively high refractive index, which is utilized in the design of certain optical systems.
Thermal Conductivity: As a gas, krypton has a low thermal conductivity, which is typical of noble gases.
Viscosity: Krypton, like other noble gases, has a low viscosity.
Safety and Reactivity
Krypton is generally non-toxic and non-reactive under normal conditions. However, it can pose a risk in confined spaces where it may displace oxygen, leading to asphyxiation. Additionally, while krypton itself does not support combustion, its high density can contribute to the quenching of flames in certain fire suppression systems.
Product |
Grade |
Package |
Krypton 5N |
99.999 % |
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Krypton 5.5N |
99.9995 % |
|
Krypton 6N |
99.9999 % |
Applications：
Lighting: Krypton's ability to produce a bright white light when electrified makes it ideal for high-intensity lamps, including those used in streetlights and automotive headlights.
Electrical Components: Its high ionization potential and inert nature make krypton suitable for use in certain types of electrical components, such as krytron tubes and other high-voltage switches.
Scientific Research: Krypton is used in the filling of ionization chambers for measuring high-energy radiation, such as cosmic rays.
Medical Imaging: Krypton's ability to absorb X-rays makes it a useful material for shielding during X-ray procedures.
Space Exploration: Krypton's inert nature and low reactivity make it suitable for use in space exploration, particularly in the development of spacecraft components.
In summary, krypton's physical properties—ranging from its density and phase transitions to its optical characteristics and safety profile—make it a versatile element with a wide range of practical applications across various industries and scientific endeavors.
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