| Identification | More | [Name]
COPPER(I) SULFIDE | [CAS]
22205-45-4 | [Synonyms]
CHALCOCITE
COPPER(I) SULFIDE
COPPER SULFIDE
CUPROUS SULFIDE
copper(i)
coppersulfide(cu2s)
cuprasulfide
cuproussulfide(cu2s)
dicoppermonosulfide
dicoppersulfide
dicopper sulphide
Copper(Ⅰ) sulfide
COPPER(I) SULFIDE, ANHYDROUS, POWDER, 99 .99%
COPPER(I) SULFIDE, POWDER,-325 MESH
Chalcocite,naturallyoccurringmineral,grains,approximately,0.06-0.19in
Copper(I)sulfide,99.5%(metalsbasis)
Copper(I)sulfide(99.5%-Cu)
copper glance
copper sulfide, naturally occurring mineral
Thiodicopper(I) | [EINECS(EC#)]
244-842-9 | [Molecular Formula]
Cu2S | [MDL Number]
MFCD00016062 | [Molecular Weight]
159.16 | [MOL File]
22205-45-4.mol |
| Chemical Properties | Back Directory | [Appearance]
Black powder or lumps.Soluble in nitric acid and
ammonium hydroxide; insoluble in water. Occurs as
the mineral chalcocite. | [Melting point ]
1100°C | [density ]
5.6 g/mL at 25 °C(lit.)
| [storage temp. ]
Keep in dark place,Inert atmosphere,Room temperature | [solubility ]
insoluble in H2O; slightly soluble in acid solutions | [form ]
powder
| [color ]
Black | [Specific Gravity]
5.6 | [Water Solubility ]
Slightly soluble in hydrochloric acid, ammonium hydroxide. Insoluble in water. | [Merck ]
14,2667 | [Solubility Product Constant (Ksp)]
pKsp: 47.6 | [Exposure limits]
ACGIH: TWA 1 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 | [Surface tension]
72.2mN/m at 18mg/L and 20℃ | [Uses]
Antifouling paints, solar cells, electrodes, solid
lubricants, luminous paints, catalyst. | [CAS DataBase Reference]
22205-45-4(CAS DataBase Reference) | [EPA Substance Registry System]
Cuprous sulfide (22205-45-4) |
| Safety Data | Back Directory | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R40:Limited evidence of a carcinogenic effect. | [Safety Statements ]
S7:Keep container tightly closed .
S22:Do not breathe dust .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [WGK Germany ]
3
| [RTECS ]
GL8910000
| [TSCA ]
Yes | [HS Code ]
2830908500 |
| Questions And Answer | Back Directory | [Chemical Properties]
Copper(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 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 Properties]
Dark-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.
| [Uses]
Copper(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.
| [Preparation]
Copper(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.
| [Reactions]
When 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.
|
| Hazard Information | Back Directory | [Definition]
ChEBI: A copper sulfide in which the metal is in the +1 oxidation state. | [Definition]
Copper glance: A mineral form ofcopper(I) sulphide,Cu2S. | [General Description]
Copper 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 |
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