What is the Difference Between Zinc Sulphate Monohydrate and Heptahydrate?
🆚 Go to Comparative Table 🆚Zinc Sulphate Monohydrate and Zinc Sulphate Heptahydrate are hydrated forms of zinc sulphate, and the main difference between them is the number of water molecules of crystallization.
- Zinc Sulphate Monohydrate:
- Contains 1 water molecule of crystallization per molecule of zinc sulphate.
- Has a zinc content of more than 34.5%.
- The zinc content of the particles is more than 33%.
- Generally used as a feed and fertilizer additive.
- Has a lower water solubility compared to zinc sulfate heptahydrate.
- More expensive than zinc sulphate heptahydrate due to its higher zinc content.
- Zinc Sulphate Heptahydrate:
- Contains 7 water molecules of crystallization per molecule of zinc sulphate.
- Has a zinc content of more than 21%.
- Commonly used as a water-soluble fertilizer.
- Has a higher water solubility compared to zinc sulfate monohydrate.
- Less expensive than zinc sulphate monohydrate due to its lower zinc content.
Both zinc sulfate monohydrate and zinc sulfate heptahydrate can be used as water-soluble fertilizers depending on the method used. They are both suitable for use in all types of soils.
Comparative Table: Zinc Sulphate Monohydrate vs Heptahydrate
Zinc sulphate monohydrate and heptahydrate are hydrated forms of zinc sulphate, and the key difference between them is the number of water molecules of crystallization. Here is a comparison table highlighting the differences between zinc sulphate monohydrate and heptahydrate:
Property | Zinc Sulphate Monohydrate | Zinc Sulphate Heptahydrate |
---|---|---|
Molecular Formula | ZnSO4.H2O | ZnSO4.7H2O |
Zinc Content (%) | >34.5% (powder), >33% (particles) | >21.5% (powder) |
Water Solubility | Generally lower | Generally higher |
Applications | Pigment lithopone, astringent, emetic, laboratory reagent, dietary supplement for animal feed, fertilizers, agricultural sprays | Same as monohydrate, but more commonly used in fertilizers |
Price | More expensive due to higher zinc content | Less expensive due to lower zinc content |
Both zinc sulphate monohydrate and heptahydrate are inorganic compounds, salts of zinc metal, and appear as colorless crystals. They can be used as water-soluble fertilizers depending on the method used.
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