High Purity Cylinder Gas Helium Cryogenic Refrigerant Factory Price

Product Description

Helium gas is a chemical element with the symbol He and atomic number 2. It is the second lightest element in the periodic table, after hydrogen. Here are some key points about helium gas:

1. Chemical Symbol: He
2. Atomic Number: 2
3. Atomic Weight: 4.0026 g/mol
4. Physical Properties: Helium is a colorless, odorless, tasteless, and non-toxic gas at standard conditions. It is lighter than air and has a density of approximately 0.1785 grams per liter at 0 degrees Celsius and 1 atmosphere of pressure. Helium has a boiling point of -268.93 degrees Celsius (-452.07 degrees Fahrenheit) and a melting point of -272.2 degrees Celsius (-457.96 degrees Fahrenheit).
5. Abundance and Occurrence: Helium is the second most abundant element in the universe, but it is relatively rare on Earth. It is primarily obtained as a byproduct during the extraction of natural gas, where it is present in small amounts.
6. Applications: Helium gas has several important applications. One of its most well-known uses is in inflating balloons and airships due to its low density, which causes objects to float. It is also used in cryogenics to cool superconducting magnets in MRI machines, particle accelerators, and other scientific equipment. Helium is used as a shielding gas in welding processes to protect the weld from atmospheric contamination. It is also utilized in various research and scientific applications, such as in gas chromatography and as a carrier gas in analytical instruments.
7. Liquid Helium: Helium can be cooled to extremely low temperatures, below its boiling point, to become a liquid. Liquid helium is used in low-temperature physics, superconductivity experiments, and as a coolant for certain applications.
8. Helium-3: Helium-3, an isotope of helium, is used in various research applications, including nuclear research, cryogenics, and as a neutron moderator in certain types of nuclear reactors.
9. Helium as a Non-Renewable Resource: Helium is considered a non-renewable resource because once it is released into the atmosphere, it escapes the Earth's gravity and is lost to space. Its availability is limited, and there are concerns about its future supply and increasing costs.
10. Safety Considerations: Helium gas is generally considered to be safe since it is non-toxic and non-flammable. However, it can displace oxygen in poorly ventilated areas, leading to asphyxiation risks. Proper handling and ventilation are important when working with helium gas.