Names | |
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Other names
gallium triselenide
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Identifiers | |
ChemSpider | |
ECHA InfoCard | 100.031.527 |
EC Number |
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PubChem
CID
|
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CompTox Dashboard (
EPA)
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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 | |
GHS labelling: | |
Danger | |
H301, H330, H373, H410 | |
P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Safety data sheet (SDS) | http://www.samaterials.com/pdf/Gallium-Selenide-(Ga2Se3)-Evaporation-Materials-sds.pdf |
Related compounds | |
Other
anions
|
Gallium(III) oxide, Gallium(III) sulfide, Gallium tribromide, Gallium(III) telluride |
Other
cations
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Aluminium(III) selenide, Indium(III) selenide |
Related compounds
|
Gallium monoselenide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Gallium(III) selenide ( Ga2 Se3) is a chemical compound. It has a defect sphalerite (cubic form of ZnS) structure. [1] It is a p-type semiconductor [2]
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.[ citation needed]