| Chinese Name | 氦3 |
| Chinese Alias | 氦-3,氦气-3,氦气-3同位素气体, |
| English Name | (3He)helium |
| English Alias | helium-3 ato helium-3 atom |
| CAS | 14762-55-1 |
| EINECS | 238-822-9 |
| Chemical Formula | He |
| Molecular Weight | 2.993602 |
| Density | |
| Melting Point | -272.14°C |
| Boiling Point | -269.97°C (estimate) |
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Helium-3 (He-3) is an isotope of helium gas, which is extremely rare in nature. Helium-3 is mainly used in fields such as ultra-low temperature research, hyperpolarized gases, and neutron detectors.