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Product Name | Helium gas |
Chemical Formula | He |
Hazard Class | 2.2 |
Molecular Weight | 4.003 |
CAS | 7440-59-7 |
Boiling Point(℃) | -268.93 |
Density(kg/m³) | 0.169 |
Density(lb/ft³) | 0.01 |
Appearance | Colorless, Tasteless, Odorless gas |
Application industry: |
1. Helium can be used as a pressurizing agent and supercharger for rocket liquid fuel, used in missiles, spacecraft and supersonic aircraft. |
2. Helium is used as a shielding gas in smelting and welding, and can be used in shipbuilding, aircraft, spacecraft, rockets and weapons. |
3. Helium has excellent permeability and is used for the cooling of nuclear reactors, the leak detection of some pipelines and electronic and electrical devices of rockets and nuclear reactors. |
4. Helium has low mass density and weight density, and is not flammable. It can be used to fill bulbs and neon tubes. It is also an ideal gas for balloons and airships. |
5. Liquid helium can obtain a low temperature close to absolute temperature (-273℃), which is used to manufacture superconducting equipment. |
6. Helium is a kind of inert gas, which is often mixed with oxygen and used as breathing gas for divers. |
Precautions: |
The first-in-first-out principle should be adopted for helium during use. Use a suitable trolley to move the container. Do not pull, roll or slide the cylinder. Do not try to grab the lid of the cylinder to pick it up; make sure that the cylinder is in use. The process is in a fixed state. Use a pressure reducing valve or an independent control valve to safely release gas from the cylinder, and a one-way valve to prevent backflow; do not heat the cylinder to increase the pressure and discharge. If the user is It is difficult to operate the gas cylinder valve, so stop using it; use an adjustable wrench to open the valve cover that is too tight or rusty. Do not insert tools (such as wrenches, screwdrivers, crowbars, etc.) into the valve cover, otherwise it will damage the valve and cause leakage; helium is compatible with all common materials, and the design of pipelines and equipment must meet the pressure requirements. |







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