Contents

Gallium(III) selenide

Gallium(III) selenide

Names
Other names gallium triselenide
Identifiers
CAS Number	12024-24-7 Y
ChemSpider	145438
ECHA InfoCard	100.031.527
EC Number	234-693-8
PubChem CID	165985
CompTox Dashboard (EPA)	DTXSID10923276
Properties
Chemical formula	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)
Solubility in water	decomposition
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H330, H373, H410
Precautionary statements	P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 1
Related compounds
Other anions	Gallium(III) oxide, Gallium(III) sulfide, Gallium tribromide, Gallium(III) telluride
Other cations	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). Y verify (what is YN ?) Infobox references

Chemical compound

Gallium(III) selenide (Ga₂Se₃) 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]}

References[edit]

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