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Hydrogen Selenide - ( H2Se )
Hydrogen Selenide is a colorless, flammable, extremely toxic gas with a very unpleasent odor. It begins to dissociate at approximately 160°C. It decomposes in air to form a red selenium precipitate. It is shipped as a liquefied gas under its own vapor pressure.
| Specifications | |
| Purity , % | 99.999 |
| Oxygen | ≤1.0 ppmv |
| Nitrogen | ≤5.0 ppmv |
| THC (CH4 ) | ≤1.0 ppmv |
| Water | ≤1.0 ppmv |
| Arsine | ≤0.5 ppmv |
| Phosphine | ≤0.5 ppmv |
| Silane | ≤0.5 ppmv |
| Hydrogen Sulfide | ≤1.0 ppmv |
| Ship | |
| DOT Shipping Name | Hydrogen Selenide , Anhydrous |
| DOT Classification | 2.3 |
| DOT Label | Poison Gas, Flammable Gas |
| UN Number | UN 2202 |
| CAS No. | 7783-7-5 |
| CGA/DISS/JIS | 350/632/W22-14L |
| Shipped as | Liquefied Gas |
| Technical Information | |
| Cylinder State @ 21.1°C | Liquid |
| Flammable Limits In Air | |
| Auto Ignition Temperature (°C ) | -18 |
| Molecular Weight (g/mol) | 80.97 |
| Specific gravity (air =1) | 2.12 |
| Critical Temperature ( °C ) | 138 |
| Critical Pressure ( psig ) | |
| Applications | |
| · In the manufacturing of ZnSe . · In the manufacturing of CIGS . | |