Copper(I) sulfide

Copper(I) sulfide
Names
	IUPAC name Copper(I) sulfide
	Other names Cuprous sulfide; Chalcocite; Copper glance
Identifiers
CAS Number	22205-45-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:51114 ;
ChemSpider	8305611 ;
ECHA InfoCard	100.040.751
PubChem CID	62755;
RTECS number	GL8910000;
UNII	349M3C1RS1 ;
CompTox Dashboard (EPA)	DTXSID0041804 ;
	InChI InChI=1S/2Cu.S/q2+1;-2 Key: AQMRBJNRFUQADD-UHFFFAOYSA-N ; InChI=1/2Cu.S/q2+1;-2 Key: AQMRBJNRFUQADD-UHFFFAOYAN;
	SMILES [Cu+].[Cu+].[S-2];
Properties
Chemical formula	Cu2S
Molar mass	159.16 g/mol
Density	5.6 g/cm3
Melting point	1,130 °C (2,070 °F; 1,400 K)
Solubility in water	insoluble
Solubility	slightly soluble in HCl; soluble in NH4OH; dissolves in KCN; decomposes in HNO3, H2SO4
Hazards
Flash point	Nonflammable
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3 (as Cu)
REL (Recommended)	TWA 1 mg/m3 (as Cu)
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)
Related compounds
Other anions	Copper(I) oxide; Copper(I) selenide
Other cations	Nickel(II) sulfide; Copper(II) sulfide; Zinc sulfide
	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

Copper(I) sulfide is a copper sulfide, a chemical compound of copper and sulfur. It has the chemical compound Cu₂S. It is found in nature as the mineral chalcocite. It has a narrow range of stoichiometry ranging from Cu_1.997S to Cu_2.000S.^[4] Samples are typically black.

^ Patnaik, Pradyot (2002). Handbook of Inorganic Chemicals. McGraw-Hill, ISBN 0-07-049439-8
^ Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 1373. ISBN 978-0-08-022057-4.
^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
^ Potter, R. W. (1977). "An electrochemical investigation of the system copper-sulfur". Economic Geology. 72 (8): 1524–1542. Bibcode:1977EcGeo..72.1524P. doi:10.2113/gsecongeo.72.8.1524.

[1] Patnaik, Pradyot (2002). Handbook of Inorganic Chemicals. McGraw-Hill, ISBN 0-07-049439-8

[Greenwood-2] Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 1373. ISBN 978-0-08-022057-4.

[PGCH-3] NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).

[4] Potter, R. W. (1977). "An electrochemical investigation of the system copper-sulfur". Economic Geology. 72 (8): 1524–1542. Bibcode:1977EcGeo..72.1524P. doi:10.2113/gsecongeo.72.8.1524.

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[2]

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Names

IUPAC name Copper(I) sulfide
Other names Cuprous sulfide Chalcocite Copper glance
Identifiers
CAS Number	22205-45-4^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:51114^Y
ChemSpider	8305611^Y
ECHA InfoCard	100.040.751
PubChem CID	62755
RTECS number	GL8910000
UNII	349M3C1RS1^Y
CompTox Dashboard (EPA)	DTXSID0041804
InChI InChI=1S/2Cu.S/q2+1;-2^Y Key: AQMRBJNRFUQADD-UHFFFAOYSA-N^Y InChI=1/2Cu.S/q2+1;-2 Key: AQMRBJNRFUQADD-UHFFFAOYAN
SMILES [Cu+].[Cu+].[S-2]
Properties
Chemical formula	Cu₂S
Molar mass	159.16 g/mol
Density	5.6 g/cm³ ^[1]
Melting point	1,130 °C (2,070 °F; 1,400 K)^[2]
Solubility in water	insoluble
Solubility	slightly soluble in HCl; soluble in NH₄OH; dissolves in KCN; decomposes in HNO₃, H₂SO₄
Hazards
Flash point	Nonflammable
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m³ (as Cu)^[3]
REL (Recommended)	TWA 1 mg/m³ (as Cu)^[3]
IDLH (Immediate danger)	TWA 100 mg/m³ (as Cu)^[3]
Related compounds
Other anions	Copper(I) oxide Copper(I) selenide
Other cations	Nickel(II) sulfide Copper(II) sulfide Zinc sulfide
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