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The Role of Zinc Sulphate Heptahydrate in Manufacturing Lithopone and Zinc Salts

Zinc Sulphate Heptahydrate (ZnSO₄·7H₂O) has become an indispensable raw material in the chemical industry, especially for producing lithopone and a wide range of zinc salts. Lithopone, a high-quality white pigment composed of zinc sulfide and barium sulfate, is essential in paints, coatings, plastics, rubber, inks, and leather finishing. The quality and consistency of lithopone depend heavily on the purity of the zinc source, making Zinc Sulphate Heptahydrate the preferred choice for reliable and efficient pigment manufacturing.

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Hunan Sincere Chemicals Co., Ltd.

During lithopone production, Zinc Sulphate Heptahydrate is first converted into zinc sulfide, which reacts with barium sulfate to create a finely dispersed, stable, and uniform white pigment. The resulting lithopone offers excellent whiteness, opacity, and chemical resistance. Compared to traditional lead-based pigments, lithopone is non-toxic and environmentally friendly, meeting modern manufacturing standards for sustainability and safety. Its superior covering power and smooth finish make it ideal for high-end paints, coatings, and printing inks.

Beyond lithopone, Zinc Sulphate Heptahydrate is a versatile intermediate in producing various zinc salts, including zinc carbonate, zinc oxide, and zinc phosphate. These zinc compounds are widely used across chemical, pharmaceutical, and agricultural industries. For instance, zinc salts play a vital role in rubber vulcanization, corrosion-resistant coatings, water treatment, flame retardants, and fertilizer formulations. The versatility and stability of Zinc Sulphate Heptahydrate ensure continuous demand, making it a reliable choice for large-scale industrial production.

High solubility, excellent chemical stability, and ease of handling make Zinc Sulphate Heptahydrate highly suitable for modern industrial processes. Manufacturers benefit from consistent product quality, higher efficiency, and reduced waste when using this compound in pigment and zinc salt production. Additionally, its use aligns with the global trend toward environmentally conscious and sustainable industrial practices, offering both functional and ecological advantages.

For industries seeking superior quality, efficiency, and eco-friendly solutions, Zinc Sulphate Heptahydrate is the ideal raw material for producing lithopone and zinc salts. Its contributions to pigment quality, chemical synthesis, and industrial applications underscore its value in the global manufacturing supply chain. By choosing Zinc Sulphate Heptahydrate, businesses can ensure consistent product performance, improved manufacturing efficiency, and compliance with modern environmental standards.


Post time: Nov-07-2025