He Helium
| Specifications | ||||
| G1 Grade 1 |
G2 Grade 2 |
|||
| Purity | ＞99.99995 | vol.％ | ＞99.999 | vol.％ |
| Impurity | ||||
| N2 | ＜0.1 | vol.ppm | ＜5 | vol.ppm |
| O2 | ＜0.05 | vol.ppm | ＜1 | vol.ppm |
| CO | ＜0.02 | vol.ppm | - | |
| CO2 | ＜0.02 | vol.ppm | ＜1 | vol.ppm |
| THC | ＜0.01 | vol.ppm | ＜1 | vol.ppm |
| H2O | ＜-80 | ℃ | ＜-70 | ℃ |
| Cylinder・Contents Cylinder/Content |
Valve for Specialty Gas Valve |
|
| 47ℓ／10ℓ： | 14.7MPa／11.8MPa | JIS.W20.9-14L／ JIS.W22-14L |
| High Pressure Gas | |
| Molecular Weight | 4.00 |
| UN Code | 1046 |
| Permissible Concentration | suffocating |
| Description | Colorless Gas |
| Odor | Odorless |
| Specific Gravity | 0.138（0℃, 0.1MPa） |
| Boiling Point | -268.9℃ |
| Density(Vapor) | 0.1785kg/㎥（0℃, 0.1MPa） |
| Density(Liquid) | 0.1466kg/ℓ（-270.977℃） |
