Characteristic
Copper monosulfide is a chemical compound of copper and sulfur. It occurs in nature as the dark indigo blue mineral covellite. It is a moderate conductor of electricity.
Chemical formula：CuS
Molar mass：95.611 g/mol
Appearance：black powder or lumps
Density：4.76 g/cm3
Melting point：above 500 °C (932 °F; 773 K) (decomposes)
Solubility in water：0.000033 g/100 mL (18 °C)
Solubility product (Ksp)：6 x 10−37
Solubility：soluble in HNO3, NH4OH, KCN
insoluble in HCl, H2SO4
Magnetic susceptibility (χ)：-2.0·10−6 cm3/mol
Refractive index (nD)：1.45
Crystal structure：hexagonal
Application
Used as an analytical reagent.
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