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Zinc Sulphate

Preparation

  • Zinc sulphate can be prepared by reacting zinc metal, zinc oxide, or zinc carbonate with sulfuric acid:

    • Using zinc metal: Zn + H2SO4 → ZnSO4 + H2

    • Using zinc oxide: ZnO + H2SO4 → ZnSO4 + H2O

    • Using zinc carbonate: ZnCO3 + H2SO4 → ZnSO4 + CO2 + H2O

Properties

  • A white, odorless, crystalline powder.

  • Soluble in water.

  • Commonly found as a heptahydrate (ZnSO₄·7H₂O), known as white vitriol.

Uses

  1. Astringent: Used in lotions, eye drops, and creams.

  2. Dietary Supplement: Treats zinc deficiency.

  3. Agriculture: Used as a fertilizer to correct zinc-deficient soils.

  4. Industrial Use: In the production of paints, inks, and other products.

Storage of Zinc Sulphate

  • Store in a cool, dry place, away from heat, moisture, and incompatible materials.

  • Keep in a tightly closed container to avoid contact with water and air.


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