CAS:1317-40-4 | COPPER(II) SULFIDE

Introduction and application of CAS:CAS:1317-40-4 | COPPER(II) SULFIDE

Indigo blue, black monoclinic or hexagonal crystal system, with metallic luster, chemical formula CuS, copper sulfide exists in nature in the form of indigo copper sulfide. With a relative density of 4.6, it is stable in dry air. It is gradually oxidized into copper sulfate in humid air and decomposes when heated to 220°C. Almost insoluble in water or ethanol, with a very small solubility product (8.0×10-37), soluble in hot dilute nitric acid, hot concentrated hydrochloric acid or concentrated sulfuric acid to form the divalent copper salt of the corresponding acid; easily soluble in hot potassium cyanide In KCN or sodium cyanide CaCN solution, copper tetracyano(Ⅰ) complex ion [Cu(CN)4]3-(potassium tetracyanocopper(Ⅱ)ate) is formed. In production Chemicalbook and analytical chemistry, the insolubility of copper sulfide can be used to separate metal ions in the solution. For example, in a mixed solution of Ni2+-Cu2+, Zn2+-Cu2+, the solution is first adjusted to slightly acidic, and then hydrogen sulfide gas is introduced. , black CuS precipitate will be produced, and Cu2+ in the solution will be removed to achieve the purpose of separation. In the laboratory, hydrogen sulfide is introduced into the slightly acidic copper sulfate solution or ammonium sulfide is added to the copper sulfate solution, and the precipitated precipitate is filtered, washed, and dried to obtain the finished copper sulfide product. It is often used to refine copper, prepare copper compounds, and prepare mixed catalysts, aniline black dye developers, and ship bottom protective coatings.

Specification of CAS:CAS:1317-40-4 | COPPER(II) SULFIDE

Melting point: 220 °C (dec.) (lit.)
Density: 4.6 g/mL at 25 °C (lit.)
Refractive index: 1.45
Solubility: insoluble in water, ethanol, diacid, alkaline solution
Form: powder
Colour: Black
Specific gravity: 4.6 (20℃)

Package and transportation of CAS:CAS:1317-40-4 | COPPER(II) SULFIDE

Package:1g,25g,100g,1kg,25kg,100kg;

Transportation: by courier/ by air/ by sea.

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