COPPER(I) SULFIDE

COPPER(I) SULFIDE Basic information
Chemical Properties Physical Properties Uses Preparation Reactions
Product Name:COPPER(I) SULFIDE
Synonyms:Copper(I) Sulphide 99.5%;Copper(I) sulfide anhydrous, powder, 99.99% trace Metals basis;Chalcocite, naturally occurring mineral, grains, approximately 1.5-4.8mm;Copper(I) sulfide, 99.5% trace metals basis;copper(i);COPPER(I) SULFIDE, POWDER, -325 MESH;Chalcocite,naturallyoccurringmineral,grains,approximately,0.06-0.19in;Copper(I)sulfide,99.5%(metalsbasis)
CAS:22205-45-4
MF:Cu2S
MW:159.16
EINECS:244-842-9
Product Categories:Inorganics;Chalcogenides;Materials Science;Metal and Ceramic Science;metal chalcogenides
Mol File:22205-45-4.mol
COPPER(I) SULFIDE Structure
COPPER(I) SULFIDE Chemical Properties
Melting point 1100°C
density 5.6 g/mL at 25 °C (lit.)
storage temp. Keep in dark place,Inert atmosphere,Room temperature
form powder
color Black
Specific Gravity5.6
Water Solubility Slightly soluble in hydrochloric acid, ammonium hydroxide. Insoluble in water.
Merck 14,2667
Solubility Product Constant (Ksp)pKsp: 47.6
Exposure limitsACGIH: TWA 1 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3
Surface tension72.2mN/m at 18mg/L and 20℃
CAS DataBase Reference22205-45-4(CAS DataBase Reference)
EPA Substance Registry SystemCuprous sulfide (22205-45-4)
Safety Information
Risk Statements 20/21/22-40
Safety Statements 7-22-36/37/39
WGK Germany 3
RTECS GL8910000
TSCA Yes
HS Code 2830908500
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
COPPER(I) SULFIDE Usage And Synthesis
Chemical PropertiesCopper(I) sulfide, Cu2S, [22205-45-4], MW 159.15, is naturally occurring as the blue or gray mineral chalcocite, [21112-20-9]. Copper(I) sulfide or copper glance is insoluble in water but decomposes in nitric acid and concentrated sulfuric acid.
Copper(I) sulfide
Copper(I) sulfide is prepared by heating mixtures of copper and sulfur in a hydrogen atmosphere or by precipitation of a copper(II) ammine salt solution with hydrogen sulfide or alkali sulfides. It is used in lubricants, solar cells, semiconductors, and luminous paints.

Physical PropertiesDark-blue or black orthogonal crystals; insoluble in water; slightly soluble in hydrochloric acid; decomposed by nitric acid and concentrated sulfuric acid; moderately soluble in ammonium hydroxide; dissolves in potassium cyanide solutions.
UsesCopper(I) sulfide is used in luminous paints; antifouling paints; in solidlubricant mixtures; in solar cells; in electrodes; and as a catalyst.
The compound occurs in nature as the mineral chalcocite (copper glance) with varying colors.
PreparationCopper(I) sulfide is available in nature as the mineral chalcocite. It also may be made by heating copper(II) sulfide with hydrogen, in the presence of small amounts of sulfur.
Alternatively, copper(I) sulfide may be prepared by heating copper with hydrogen sulfide and hydrogen; or by heating the metal with sulfur in an atmosphere of carbon dioxide and methanol vapor.
ReactionsWhen heated in air, copper(I) sulfide oxidizes forming copper(II) oxide, and sulfur dioxide:
Cu2S + 2O2→ 2CuO + SO2
Heating in the absence of air produces copper(II) sulfide and copper:
Cu2S→ CuS + Cu
When heated with nitric acid, copper(I) sulfide decomposes forming copper nitrate and hydrogen sulfide. The compound dissolves in aqueous solutions containing cyanide ions forming soluble copper-cyanide complexes.
Copper(I) sulfide reacts with polysulfide anions in aqueous solutions forming soluble copper polysulfides.




Chemical PropertiesBlack powder or lumps.Soluble in nitric acid and ammonium hydroxide; insoluble in water. Occurs as the mineral chalcocite.
UsesAntifouling paints, solar cells, electrodes, solid lubricants, luminous paints, catalyst.
UsesCopper(I) sulfide is used in luminous paints, electrodes and in solar cells. It is also used for grain mounts, XRD and in microprobe standards for the identification of unknown minerals. It acts as a precursor for the preparation of copper(I) oxide and copper metal. Further, it acts as a catalyst.
DefinitionChEBI: A copper sulfide in which the metal is in the +1 oxidation state.
DefinitionCopper glance: A mineral form ofcopper(I) sulphide,Cu2S.
General DescriptionCopper sulfide shows metal-like electrical conductivity, chemical-sensing capability and suitable characteristics for absorption of solar energy. Cu63 NMR, X ray photoelectron spectroscopy,2 copper sulfide CuS was studied in detail. Copper sulfide is a monovalent and oxidation state was determined to be 2.2
COPPER(I) SULFIDE Preparation Products And Raw materials
Cuprous iodide MERCUROUS CHLORIDE SILVER(I) SULFIDE Ferrous sulfide Lead dioxide BARIUM SULFITE Cupric carbonate basic Barium sulfate COPPER(II) DIAMMONIUM CHLORIDE DIHYDRATE COPPER(I) SULFIDE Copper ores, sulfide-treated, silver-copper residues Copper Ammonium fluoride COPPER SILVER SULFIDE copper iron sulfide COPPER(II) SULFIDE Copper(II) sulfide, black COPPER NICKEL SULFIDE

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