Gallium(III) selenide
| Names | |
|---|---|
| Other names
gallium triselenide
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| Identifiers | |
| ECHA InfoCard | 100.031.527 |
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PubChem CID
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| Properties | |
| Ga2Se3 | |
| Molar mass | 376.33 g/mol |
| Appearance | reddish-black crystals |
| Odor | slight garlic odor |
| Density | 4.92 g/cm3 |
| Melting point | 1,020 °C (1,870 °F; 1,290 K) |
| decomposition | |
| Hazards | |
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EU classification (DSD) (outdated)
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not listed |
| NFPA 704 | |
| Related compounds | |
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Other anions
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Gallium(III) oxide, Gallium(III) sulfide, Gallium tribromide, Gallium(III) telluride |
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Other cations
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Aluminium(III) selenide, Indium(III) selenide |
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Related compounds
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Gallium monoselenide |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
Gallium(III) selenide (Ga2Se3) is a chemical compound. It has a defect sphalerite (cubic form of ZnS) structure. It is a p-type semiconductor
It can be formed by union of the elements. It hydrolyses slowly in water and quickly in mineral acids to form toxic hydrogen selenide gas. The reducing capabilities of the selenide ion make it vulnerable to oxidizing agents. It is advised therefore that it not come into contact with bases.
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