Bismuth selenide

Bismuth selenide
Names
	IUPAC name selenoxobismuth, selanylidenebismuth
Identifiers
CAS Number	12068-69-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	145787;
ECHA InfoCard	100.031.901
EC Number	235-104-7;
PubChem CID	6379269;
UNII	9I1Y040903;
CompTox Dashboard (EPA)	DTXSID60893213 ;
	InChI InChI=1S/2Bi.3Se Key: OMEPJWROJCQMMU-UHFFFAOYSA-N;
	SMILES [Se-2].[Se-2].[Se-2].[Bi+3].[Bi+3];
Properties
Chemical formula	Bi2Se3
Molar mass	654.8 g/mol
Appearance	Dull grey
Density	6.82 g/cm3
Melting point	710 °C (1,310 °F; 983 K)
Solubility in water	insoluble
Solubility	insoluble in organic solvents ; soluble in strong acids
Structure
Crystal structure	rhombohedral
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-140 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic
NFPA 704 (fire diamond)	2 0 0
Related compounds
Other anions	Bismuth(III) oxide ; Bismuth trisulfide ; Bismuth telluride
Other cations	Arsenic triselenide; Antimony triselenide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Bismuth selenide (Bi₂Se₃) is a gray compound of bismuth and selenium also known as bismuth(III) selenide.

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