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Properties of Cu2S

Properties of Cu2S (Copper(i) sulfide):

Compound NameCopper(i) sulfide
Chemical FormulaCu2S
Molar Mass159.157 g/mol
Physical properties
Solubilityinsoluble
Density5.6000 g/cm³
Melting1,130.00 °C

Alternative Names

Cuprous sulfide
Chalcocite
Copper glance

Elemental composition of Cu2S
ElementSymbolAtomic weightAtomsMass percent
CopperCu63.546279.8532
SulfurS32.065120.1468
Mass Percent CompositionAtomic Percent Composition
Cu: 79.85%S: 20.15%
Cu Copper (79.85%)
S Sulfur (20.15%)
Cu: 66.67%S: 33.33%
Cu Copper (66.67%)
S Sulfur (33.33%)
Mass Percent Composition
Cu: 79.85%S: 20.15%
Cu Copper (79.85%)
S Sulfur (20.15%)
Atomic Percent Composition
Cu: 66.67%S: 33.33%
Cu Copper (66.67%)
S Sulfur (33.33%)
Identifiers
CAS Number22205-45-4
SMILES[Cu+].[Cu+].[S-2]
Hill formulaCu2S

Related compounds
FormulaCompound name
CuSCopper(II) sulfide

Sample reactions for Cu2S
EquationReaction type
Cu2S + O2 = Cu2O + SO2double replacement
Cu2O + Cu2S = Cu + SO2double replacement
Cu2S + O2 = Cu + SO2single replacement
Cu2S + O2 = CuO + SO2double replacement
Cu2S + S8 = CuSsynthesis

Related
Molecular weight calculator
Oxidation state calculator

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