Catalog Number
ACMA00021066
Product Name
Copper sulfide
Description
DryPowder; OtherSolid; WetSolid
IUPAC Name
sulfanylidenecopper
Molecular Weight
95.61g/mol
InChI Key
BWFPGXWASODCHM-UHFFFAOYSA-N
Solubility
0.000033 G/100 CC WATER @ 18 °C.;Insoluble in water, ethanol, dilute acids and alkaline solutions;Virtually insoluble in water, but soluble in alkali cyanides and in aqueous ammonia solution with complex ion formation
Application
Copper sulfide serves multiple purposes across various industries, primarily due to its versatile chemical properties. Occurring naturally as the mineral chalcocite, it is found in black powder or lump form, and is notably soluble in nitric acid and ammonium hydroxide, while remaining insoluble in water. In luminous paints, electrodes, and solar cells, copper sulfi de functions effectively, facilitating energy and technology applications. It is instrumental in geological and analytical processes, being used for grain mounts, X-ray diffraction (XRD), and as microprobe standards for mineral identification. Additionally, it acts as a precursor in synthesizing copper(I) oxide and elemental copper, showcasing its pivotal role in chemical transformations. Copper sulfide is also used as a catalyst in various reactions. When subjected to heat in an oxygen-rich environment, it transforms into copper(II) oxide and sulfur dioxide, while in the absence of air, it decomposes into copper(II) sulfide and metallic copper. Reacting with nitric acid, it forms copper nitrate and hydrogen sulfide, and in aqueous cyanide solution, it leads to copper-cyanide complexes. Moreover, copper sulfide's interaction with polysulfide anions results in soluble copper polysulfides, demonstrating its reactive nature and broad applicability in scientific and industrial fields.
Color/Form
Black powder or lumps;Black hexagonal crystals
Composition
Melting point= 220 °C (decomp)
Compound Is Canonicalized
Yes
Covalently-Bonded Unit Count
1
Defined Atom Stereocenter Count
0
Defined Bond Stereocenter Count
0
Deprecated CAS
62975-02-4, 1708103-91-6
Hydrogen Bond Acceptor Count
1
Hydrogen Bond Donor Count
0
MeSH Entry Terms
covellite;cpd with unspecified MF of cupric sulfide;cupric sulfide;CuS
Monoisotopic Mass
94.901668g/mol
Other Experimental
TRANSITION POINT @ 103 °C.;Stable in air when dry oxidized to copper sulfate by moist air;Decomposes at 220 °C; decomposed by hot nitric acid; it is stable in dry air, but is slowly oxidized to copper(II) sulfate in moist air.;transition 507 °C
Refractive Index
INDEX OF REFRACTION: 1.45
Stability
STABLE IN AIR WHEN DRY; OXIDIZED TO COPPER SULFATE BY MOIST AIR.
Topological Polar Surface Area
32.1Ų
Undefined Atom Stereocenter Count
0
Undefined Bond Stereocenter Count
0
