Copper ii sulfide or cupric sulfide stood for by the chemical formula CuS that bears the IUPAC name sulfanylidenecopper <1> is a black powder or lumps that is soluble in nitric acid however insoluble in water <3>. It occurs as the mineral covellite and also is one ionic link <3, 4>. That is stable in air as soon as it is dry but gets oxidized come copper sulfate by humidity in the waiting <1>.

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Copper II Sulfide

Copper II Sulfide Identification

CAS Number1317-40-4 <1>
PubChem CID14831 <1>
ChemSpider ID145403 <2>
EC Number215-271-2 <1>

Composition and also Synthesis

Copper ii sulfide can be all set by a reaction between molten sulfur and also copper that is later followed by boiling in salt hydroxide <1>.

Cu + S = CuS


Copper II Sulfide Formula

Properties and also Characteristics that Copper 2 Sulfide

General Properties

Molar mass/molecular weight95.606 g/mol <1>

Physical Properties

Color/appearanceBlack flour <3>
Melting point/freezing point220°C, 428°F (decomposes) <3>
Boiling pointN/A <3>
Density 4.6 g ml-1 at 25°C <3>
State of matter at room temperature (normal phase)Solid <3>
Refractive index1.45 <1>

Chemical Properties

Solubility in waterN/A <1>

Atomic Properties

Crystal structureHexagonal <1>


Copper II Sulfide Structure

Prominent reactions of CuS

Copper ii sulfide reacts v oxygen at a temperature that 300-500°C to form copper oxide and also sulfur dioxide <7>.

2CuS + 3O2 = 2CuO + 2SO2

Cupric Sulfide Uses

In the ready of blended catalysts <3>.In occurring aniline black dye for textile print <3>.In antifouling paints <3>.In photo optic applications and as a semiconductor <6>.

Is the Dangerous

Cupric sulfide is toxicity if ingested. Contact with eyes and also skin and inhalation must be avoided since it may cause irritation. It has actually a resilient harmful impact on aquatic life <1, 3, 5>. Under fire conditions, the decomposes to produce hazardous copper oxides and also sulfur oxides <8>.


Calcium Hydride

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