High Purity Hydrogen Selenide (H2Se) Specialty Gases
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Contact usSpecifications
| 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 |
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 ) |
Description
Hydrogen selenide is an inorganic compound with the formula H2Se. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. H2Se is a colorless, flammable gas under standard conditions. It is the most toxic selenium compound with an exposure limit of 0.05 ppm over an 8-hour period.Even at extremely low concentrations, this compound has a very irritating smell resembling that of decayed horseradish or "leaking gas", but smells of rotten eggs at higher concentrations.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 .
Applications
● In the manufacturing of ZnSe.
● In the manufacturing of CIGS.
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