Helium
Helium, a noble gas, atomic number two. It is a colorless, odorless, inert gas. It is not active chemically. It is difficult to react with other substances in general.
Main usage:
1.can be used as rocket liquid fuel pressure and booster agent, a large number of missiles, spaceships and supersonic aircraft.
2. Helium is used as a protective gas in smelting and welding.
3. Helium gas has excellent permeability and is used for cooling of nuclear reactors, leak detection of rockets and some pipelines of nuclear reactors, as well as electronic and electrical devices.
4. Helium is a gas with an ideal gas. It is an ideal gas for vapor pressure thermometers at extremely low temperatures.
5. Helium has low mass density and weight density, and is non-flammable. It can be used to fill light bulbs and neon tubes, and is ideal for balloons and airships.
6. Liquid helium can be obtained at temperatures close to absolute (-273 ° C) for the manufacture of superconducting equipment.
7. An inert gas that is less soluble in the blood and therefore less anesthetic than nitrogen. Helium is often mixed with oxygen and used as a breathing gas for divers.
6N Technical parameters and specification: 99.9999%
Parameters |
Specification |
Chemical Purity |
≥ 99.9999% |
Neon |
≤ 4 ppm |
Hydrogen |
≤ 0.1 ppm |
Oxygen+Argon |
≤ 0.2 ppm |
Nitrogen |
≤ 0.2 ppm |
CH4 |
≤ 0.1 ppm |
Carbon Dioxide |
≤ 0.1 ppm |
CO |
≤ 0.1 ppm |
H2O |
≤ 0.2 ppm |
5N Technical parameters and specification:99.999%
Parameters |
Specification |
Chemical Purity |
≥ 99.999% |
Neon |
≤ 4 ppm |
Hydrogen |
≤ 1 ppm |
Oxygen+Argon |
≤ 1 ppm |
Nitrogen |
≤ 2 ppm |
CH4 |
≤ 0.5 ppm |
Carbon Dioxide |
≤ 0.5 ppm |
CO |
≤ 0.5 ppm |
H2O |
≤ 3 ppm |
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