Zinc Sulfate Monohydrate CAS 7446-19-7(H2O) Zinc Sulfate Heptahydrate CAS 7446-20-0 (7H2O)

• Monohydrate (ZnSO₄·H₂O): Boasts a high zinc content (~35%), exceptional chemical stability, and low hygroscopicity, ensuring no clumping during storage and transportation. Its concentrated zinc form offers cost-effectiveness in bulk applications (e.g., animal feed, industrial production) and maintains consistent performance under harsh processing conditions (e.g., high temperature, long-term storage).
• Heptahydrate (ZnSO₄·7H₂O): Features excellent water solubility (960 g/L at 20℃), enabling rapid dissolution and easy formulation in aqueous systems. It exhibits high bioavailability of zinc, making it ideal for applications requiring fast absorption (e.g., agricultural sprays, pharmaceutical preparations).
• Shared Advantages: Both forms are chemically stable, non-toxic when used as directed, and cost-competitive compared to other zinc compounds (e.g., zinc oxide, zinc gluconate). They are also easy to synthesize and process, supporting large-scale industrial production and versatile formulation adaptability.

1. Agriculture

• Crop Nutrition: Heptahydrate is widely used as a foliar fertilizer or soil amendment to correct zinc deficiency in crops (e.g., rice, wheat, fruits), promoting root development, increasing yield, and enhancing disease resistance.
• Animal Feed Additive: Monohydrate is the preferred choice for livestock (pigs, poultry) and aquaculture feed, as its high zinc content and stability effectively prevent zinc deficiency-related issues (e.g., stunted growth, reproductive disorders, skin lesions) and improve feed conversion efficiency.

2. Pharmaceuticals & Healthcare

• Zinc Supplementation: Both forms are used in oral formulations (tablets, syrups) to treat zinc deficiency in humans, supporting immune function, wound healing, and growth development.
• Topical & Ophthalmic Uses: Heptahydrate’s solubility makes it suitable for eye drops (treating conjunctivitis, trachoma) and topical ointments (alleviating eczema, dermatitis, and acne).

3. Industrial Manufacturing

• Chemical Raw Material: Used to produce zinc salts (e.g., zinc stearate, zinc oxide), lithopone (a white pigment), and other chemical intermediates.
• Electroplating: Serves as a key component in galvanizing baths and gold-imitation electroplating solutions, ensuring uniform and corrosion-resistant coatings.
• Textile & Paper Industry: Heptahydrate acts as a coagulant in viscose fiber production and a mordant in dyeing processes; it is also used as a bleaching aid in papermaking.
• Water Treatment: Utilized for coagulation and sedimentation in wastewater treatment, removing heavy metals and organic impurities.

4. Other Applications

• Cosmetics: Added to toothpaste and skincare products for its antibacterial and astringent properties.
• Food & Beverage: Used as a yeast nutrient in brewing (especially for high-alcohol fermentation) and a fortifying agent in processed foods.
• Wood Preservation: Formulates wood preservatives to prevent fungal decay and insect infestation.