helium
Modify Date: 2025-08-20 10:22:56
helium structure
|
Common Name | helium | ||
|---|---|---|---|---|
| CAS Number | 7440-59-7 | Molecular Weight | 4.00260 | |
| Density | 0.1785（0ºC） | Boiling Point | -268.934ºC(lit.) | |
| Molecular Formula | He | Melting Point | -272.2ºC(lit.) | |
| MSDS | N/A | Flash Point | none | |
| Name | helium atom |
|---|---|
| Synonym | More Synonyms |
| Density | 0.1785（0ºC） |
|---|---|
| Boiling Point | -268.934ºC(lit.) |
| Melting Point | -272.2ºC(lit.) |
| Molecular Formula | He |
| Molecular Weight | 4.00260 |
| Flash Point | none |
| Exact Mass | 4.00260 |
| Vapour density | 0.14 (vs air) |
| Stability | Stable; extremely unreactive. |
CHEMICAL IDENTIFICATION
|
| HS Code | 2804290000 |
|---|
| EINECS 231-168-5 |
| helium |
| MFCD00011031 |