Zinc Sulphate is an essential inorganic compound widely used in agriculture, pharmaceuticals, water treatment, and industrial applications. It is available in two forms: Zinc Sulphate Monohydrate (ZnSO₄·H₂O) and Zinc Sulphate Heptahydrate (ZnSO₄·7H₂O). Both forms serve as a vital source of zinc, an essential micronutrient for plant growth, animal health, and industrial processing.

Chemical Properties

Property Zinc Sulphate Monohydrate Zinc Sulphate Heptahydrate

Chemical Formula ZnSO₄·H₂O ZnSO₄·7H₂O

Molecular Weight 179.45 g/mol 287.54 g/mol

Zinc (Zn) Content ≥ 33% ≥ 22%

Appearance: White crystalline powder, White or colourless crystals

Solubility: Highly soluble in water Highly soluble in water

pH (5% Solution) 4.0 – 6.0 4.0 – 6.0

Industrial Applications

1. Agriculture & Fertilizers

• Used as a micronutrient fertiliser to correct zinc deficiency in crops.
• Enhances plant growth, chlorophyll production, and overall yield.
• Applied via soil application, foliar spray, or fertigation.

2. Animal Feed Supplements

• Added to animal feed as a zinc supplement to support growth, immune function, and metabolism.
• Prevents zinc deficiency disorders in livestock and poultry.

3. Pharmaceuticals & Healthcare

• Used in the production of medicines, dietary supplements, and antiseptics.
• Supports immune system function and wound healing.

4. Water Treatment

• Acts as a coagulant in wastewater treatment to remove impurities.
• Used to control algae growth in water reservoirs and cooling towers.

5. Industrial Applications

• Employed in electroplating to enhance corrosion resistance.
• Used in textile processing as a mordant in dyeing and finishing.

Differences Between Zinc Sulphate Monohydrate & Heptahydrate

• Zinc Sulphate Monohydrate (ZnSO₄·H₂O) contains a higher zinc concentration (≥ 33%), making it more efficient for agricultural use.
• Zinc Sulphate Heptahydrate (ZnSO₄·7H₂O) has a higher water content, making it easier to dissolve but with a lower zinc percentage (≥ 22%).

Advantages of Zinc Sulphate

✔ High solubility for easy application in agriculture and industrial processes.

✔ Essential micronutrient for plant and animal health.

✔ Cost-effective and efficient for zinc supplementation.

✔ Multi-industry usage, including agriculture, feed, pharmaceuticals, and water treatment.

Safety & Handling

• Avoid direct contact with skin and eyes—use gloves and goggles.
• Store in a dry, cool, and well-ventilated area to prevent moisture absorption.
• Keep away from incompatible substances such as strong acids and alkalis.

Packaging & Storage

• Available in:
• 25 kg & 50 kg HDPE bags with inner liners
• Bulk jumbo bags
• Storage Conditions: Store in a moisture-free environment to prevent caking.

For bulk orders and inquiries, please contact us at info@watachemical.co