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Zinc Sulphate is a high-solubility inorganic salt of Zinc (Zn), an essential micronutrient for both human, animal, and plant health. Typically supplied in one of two main hydrate forms by Zinc Sulphate producers. Zinc Sulphate Monohydrate (CAS 7446-19-7): High concentration of Zinc (35% minimum Zn). Zinc sulphate monohydrate's water content makes it the preferred form for bulk blending in solid fertilisers and for animal feed supplementation due to its higher active ingredient percentage per weight. Zinc Sulphate Heptahydrate (CAS 7446-20-0): containing a lower concentration of Zinc (22% minimum Zn). Zinc sulphate's Heptahydrate's high solubility makes it the preferred choice for liquid fertiliser solutions (foliar sprays) and certain industrial applications where rapid dissolution is critical. Also called ‘white vitriol’ by Zinc Sulphate distributors. We are the leading Zinc Sulphate supplier worldwide, ensuring comprehensive regulatory support & CoA traceability for various grades with global supply capability with reliable lead time.
Zinc Sulphate is a high-solubility inorganic salt of Zinc (Zn), an essential micronutrient for both human, animal, and plant health. Typically supplied in one of two main hydrate forms by Zinc Sulphate producers. Zinc Sulphate Monohydrate (CAS 7446-19-7): High concentration of Zinc (35% minimum Zn). Zinc sulphate monohydrate's water content makes it the preferred form for bulk blending in solid fertilisers and for animal feed supplementation due to its higher active ingredient percentage per weight. Zinc Sulphate Heptahydrate (CAS 7446-20-0): containing a lower concentration of Zinc (22% minimum Zn). Zinc sulphate's Heptahydrate's high solubility makes it the preferred choice for liquid f...
Chemical Properties & Specifications
H302: Harmful if swallowed
H318: Causes serious eye damage
H400: Very toxic to aquatic life
H410: Very toxic to aquatic life with long lasting effects
P264, P264+P265, P270, P273, P280, P301+P317, P305+P354+P338, P317, P330, P391, and P501
Correcting Zinc deficiency in crops globally, often applied via soil broadcasting (Monohydrate) or foliar spray (Heptahydrate)
Nutritional supplement to ensure adequate Zinc intake in livestock and poultry
Used as a depressant in the flotation separation of lead/zinc ores to prevent Sphalerite (Zinc sulfide) from floating
Production of Lithopone (a white pigment), in the rayon industry, and as a raw material for other Zinc compounds
Stable
Keep container tightly closed
Monohydrate is more cost-effective. While the initial price per kg might be higher, it contains ~ 35% Zn compared to ~ 22% in Heptahydrate. This results in lower transportation and handling costs per unit of active Zinc, which is preferred by bulk blenders.
Primary difference is dissolution rate. Heptahydrate (7446-20-0) is more soluble and dissolves faster, making it ideal for immediate foliar spray uptake. Monohydrate (7446-19-7) is preferred for long-term soil application due to its stability and higher elemental concentration.
For feed grade, purity is paramount. Buyers check for very low levels of heavy metals, especially Lead (Pb), Cadmium (Cd), and Arsenic (As). Product must meet national feed additive standards to ensure animal safety, as the Zinc is continuously consumed.
Mining industry (Metallurgy Chemicals), Zinc Sulphate is used to selectively depress the flotation of Sphalerite (ZnS) when separating it from other minerals like Galena (PbS). It works by modifying the Sphalerite surface chemistry, preventing collector molecules from attaching.
Yes, but it's challenging. While the Monohydrate has a high Zn concentration, it is often more difficult to dissolve than the Heptahydrate and requires careful mixing and heating to produce a stable liquid concentrate without crystallisation issues. For ease of mixing, the Heptahydrate is usually chosen.
