Copper (II) Sulphate

Synonyms: copper (II) sulphate 5-hydrate, copper (II) sulphate pentahydrate, blue copperas, cupric sulfate

Chemical formula: CuSO4 • 5H2O

International name: Copper Sulfate

CAS No.: 7758- 99- 8

Grade: pure, AR, import

Appearance: blue and turquoise crystals

Copper (II) sulphate, 5-hydrate (blue copperas, cupric sulfate) is a blue crystalline powder soluble in water, diluted alcohol and concentrated hydrochloric acid, deflates in the air, freely forms primary sulphates, double salts (schoenites), ammoniates. In nature, copper (II) sulphate 5-hydrate occurs as minerals chalcocyanite CuSO4, chalcanthite CuSO4.5H2O, bonattite CuSO4.3Н2О, boothite CuSO4.7Н2О, brochantite CuSO4.3Сu(ОН), etc.

Production

Copper sulphate (blue copperas) is produced in industry as follows:

• by dissolving Cu and copper wastes in diluted sulfuric acid during aeration,
• by dissolving CuO in sulfuric acid,
• by sulphatizing roasting Cu sulfides,
• as a by-product of Cu electrolytic refining.

Application of Copper Sulphate

Copper sulphate (copper (II) sulphate 5-hydrate) is widely used as follows:

• as a mordant when dyeing textile materials,
• when wood preservation,
• as a microfertilizer intended for crops dressing in soils poor in moving copper forms,
• for seed dressing,
• in electroplating,
• for enhancement and toning prints in photography, etc.