Copper(II) selenide

Copper(II) selenide is an inorganic binary compound between copper and selenium, with the chemical formula CuSe.

Copper(II) selenide

Names
IUPAC name Copper(II) selenide
Other names Cupric selenide
Identifiers
CAS Number	1317-41-5
3D model (JSmol)	Interactive image
ChemSpider	66608
ECHA InfoCard	100.013.885
EC Number	215-272-8
PubChem CID	101943149
UNII	5TY4U83X24
CompTox Dashboard (EPA)	DTXSID501014324
InChI InChI=1S/Cu.Se Key: IRPLSAGFWHCJIQ-UHFFFAOYSA-N
SMILES [Cu].[Se]
Properties
Chemical formula	CuSe
Molar mass	142.517 g·mol−1
Appearance	Black
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
Precautionary statements	P260, P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P319, P321, P330, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Uses

Copper(II) selenide is produced in situ to form a protective black coating on iron or steel parts in some cold-bluing processes.^[1] Bluing solutions that operate in this manner will typically be labeled as containing selenous acid or selenium dioxide.^[2][3] It has also been investigated for use in the treatment of colon cancer.^[4]

Natural occurrences

Copper selenides are the most common selenium minerals. CuSe is known in mineralogy as klockmannite.^[5]

See also

• Copper(I) selenide
• Gallium(II) selenide
• Indium(III) selenide
• Copper indium gallium selenide
• Copper(II) sulfate
• Selenium dioxide
• Selenous acid