By lql | 08 February 2023 | 0 Comments
How is copper sulfide made?
What is Copper sulfide?
Copper sulfide is an inorganic compound, its chemical formula is CuS or (Cu+)3(S2-)(S2-), so it is actually a mixed salt of cuprous sulfide and supersulfide, which is dark brown and extremely insoluble. It is one of the most insoluble substances (second only to silver sulfide, mercury sulfide, palladium sulfide, and platinum sulfide) because its insolubility enables some seemingly impossible reactions to occur.
Copper sulfide is an inorganic compound, its chemical formula is CuS or (Cu+)3(S2-)(S2-), so it is actually a mixed salt of cuprous sulfide and supersulfide, which is dark brown and extremely insoluble. It is one of the most insoluble substances (second only to silver sulfide, mercury sulfide, palladium sulfide, and platinum sulfide) because its insolubility enables some seemingly impossible reactions to occur.
More about Copper sulfide:
Appearance and properties: dark brown amorphous powder or granules.
The chemical molecular structural formula of copper sulfide
Melting point: 220℃ (decomposition)
Boiling point: meaningless.
Solubility: It is extremely insoluble in water (Ksp is 1.27×10-36 at 25°C), and it is also insoluble in sodium sulfide solution and concentrated hydrochloric acid.
Manufacturing method of Copper sulfide Powder
No sulfur and copper directly mixed heating to prepare copper sulfide because the oxidation of sulfur is weak. The reaction will generate a mixture of copper sulfide and cuprous sulfide: 2Cu+S==△==Cu2S, Cu+S==△==CuS Can make copper powder and sulfur dissolved in carbon disulfide reaction at 100℃ to produce pure copper sulfide: Cu+S==100℃, CS2==CuS Laboratory preparation of copper sulfide is usually prepared by adding H2S gas or soluble sulfide (such as sodium sulfide) into copper salt (mainly copper chloride and copper sulfate) solution through double decomposition reaction: CuCl2+H2S====CuS↓+2HCl (weak acid to strong acid) This reaction can occur because copper sulfide is too insoluble, causing the equilibrium to shift to the right. CuSO4+Na2S====CuS↓+Na2SO4
Chemical properties of Copper sulfide Powder
Unstable to heat and decomposed into cuprous sulfide and sulfur when heated to 220℃;
2CuS==220℃==Cu2S+S
Reducible, easily oxidized, and dissolved by concentrated, dilute nitric acid and concentrated sulfuric acid;
CuS+8HNO3 (concentrated) = = = cuso4+8NO2 =+4h2o
3CuS+8HNO3 (dilute) = = = 3cuso4+8no =+4h2o
CuS+4H2SO4 (concentrated) = = = CusO4+4SO2 =+4H2O
It can also be slowly oxidized by oxygen in the air;
2CuS+O2====2CuO+2S
But can be rapidly oxidized by oxygen when heated;
2CuS+3O2==△==2CuO+2SO2
Price of Copper sulfide Powder
Copper sulfide powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Copper sulfide powder. A large amount of large amount will be lower. The price of Copper sulfide powder can be found on our company's official website.
Copper sulfide powder supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Copper sulfide powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Copper sulfide powder, you are welcome to contact us or inquire any time.
Appearance and properties: dark brown amorphous powder or granules.
The chemical molecular structural formula of copper sulfide
Melting point: 220℃ (decomposition)
Boiling point: meaningless.
Solubility: It is extremely insoluble in water (Ksp is 1.27×10-36 at 25°C), and it is also insoluble in sodium sulfide solution and concentrated hydrochloric acid.
Manufacturing method of Copper sulfide Powder
No sulfur and copper directly mixed heating to prepare copper sulfide because the oxidation of sulfur is weak. The reaction will generate a mixture of copper sulfide and cuprous sulfide: 2Cu+S==△==Cu2S, Cu+S==△==CuS Can make copper powder and sulfur dissolved in carbon disulfide reaction at 100℃ to produce pure copper sulfide: Cu+S==100℃, CS2==CuS Laboratory preparation of copper sulfide is usually prepared by adding H2S gas or soluble sulfide (such as sodium sulfide) into copper salt (mainly copper chloride and copper sulfate) solution through double decomposition reaction: CuCl2+H2S====CuS↓+2HCl (weak acid to strong acid) This reaction can occur because copper sulfide is too insoluble, causing the equilibrium to shift to the right. CuSO4+Na2S====CuS↓+Na2SO4
Chemical properties of Copper sulfide Powder
Unstable to heat and decomposed into cuprous sulfide and sulfur when heated to 220℃;
2CuS==220℃==Cu2S+S
Reducible, easily oxidized, and dissolved by concentrated, dilute nitric acid and concentrated sulfuric acid;
CuS+8HNO3 (concentrated) = = = cuso4+8NO2 =+4h2o
3CuS+8HNO3 (dilute) = = = 3cuso4+8no =+4h2o
CuS+4H2SO4 (concentrated) = = = CusO4+4SO2 =+4H2O
It can also be slowly oxidized by oxygen in the air;
2CuS+O2====2CuO+2S
But can be rapidly oxidized by oxygen when heated;
2CuS+3O2==△==2CuO+2SO2
Price of Copper sulfide Powder
Copper sulfide powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Copper sulfide powder. A large amount of large amount will be lower. The price of Copper sulfide powder can be found on our company's official website.
Copper sulfide powder supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Copper sulfide powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Copper sulfide powder, you are welcome to contact us or inquire any time.
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