| | 7440-59-7 Basic information More.. |
| Product Name: | HELIUM | | Synonyms: | HELIUM;HYDROGEN AND HELIUM;HYDROGEN-HELIUM;LEAK DETECTION STANDARD LD-3;atomichelium;helium,compressed;Primarily commercial liquefaction plants;HELIUMIONS | | CAS: | 7440-59-7 | | MF: | He | | MW: | 4 | | EINECS: | 231-168-5 | | Mol File: | 7440-59-7.mol |  |
Use
Helium is used as an inert gas shield in arc welding, as a lifting gas for lighter-than-air aircraft, and as a gaseous cooling medium in nuclear reactors. It is also used to provide a protective atmosphere for growing germanium and silicon crystals for transistors, to provide a protective atmosphere in the production of such reactive metals as titanium and zirconium, to fill cold-weather fluorescent lamps, to trace leaks in refrigeration and other closed systems, and to fill neutron and gas thermometers. Its thermal conductivity makes it an important gas for lasers and fiber optic production.
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7440-59-7
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