Basic Physical and Chemical Characteristics
- Molecular Formula: ZnSO₄·7H₂O
- CAS Number: 7446-20-0
- Zinc sulfate heptahydrate, commonly known as zinc sulfate, is a white crystalline substance and a commonly used raw material for water-soluble zinc fertilizers. It is highly soluble in water and can be used directly for foliar spraying or soil irrigation; it is slightly soluble in alcohols but virtually insoluble in common organic solvents.
- Its aqueous solution is weakly acidic and should not be mixed with strongly alkaline pesticides or fertilizers for extended periods.
- It is prone to deliquescence in dry environments; prolonged exposure to the open air causes it to lose water, turning into a white powder. While the effective zinc content increases relatively, its solubility decreases.
- It is stable at room temperature and poses no risk of combustion or explosion; when heated, it loses its crystalline water, and excessive temperatures can cause decomposition. During storage and transportation, prolonged exposure to direct sunlight and high-temperature stacking should be avoided.
- Product Keywords: zinc sulfate heptahydrate for fertilizer, zinc sulphate heptahydrate agriculture use, zinc sulphate heptahydrate use in agriculture, zinc sulfate heptahydrate for animal feed.
Product Composition and Specifications
(I) Core Ingredients
Primary Ingredient: Zinc sulfate heptahydrate (ZnSO₄·7H₂O), serving as a highly efficient zinc source (Zn²⁺) for industrial production and the core functional component. No auxiliary agents or fillers are added, ensuring pure composition.
(II) Product Specifications
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Zinc Sulphate Heptahydrate |
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Parameters |
Specifications |
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Zinc Sulphate Heptahydrate Code |
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Molecular Formula |
ZnSO4·7(H2O) |
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CAS No. |
7446-20-0 |
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Country of Origin |
China |
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Molecular Weight |
287.58g/mol |
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Grade |
Agricultural Grade / Industrial Grade |
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Nutrient Levels |
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Purity % w/w |
as ZnSO4·7(H2O) Min.99 |
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Total Zn % w/w |
as Zn Min.22.5 |
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Package |
25kg. 50kg. 500kg. 1000kg. 1250kg bag and OEM colour bag |
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Physical Characteristics |
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Bulk Density(kg/m³) (tapped) |
900-1200 |
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Sieve Analysis |
<6mm 100% w/w(2-5mm >93% w/w min, <1mm <1% w/w) |
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Product Appearance |
Colorless transparent granules/columnar crystals |
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REMARKS: 1.FOB Tianjin Port. 2.Payment term: 30% prepayment, the rest need be paid before delivery. 3.MOQ: 24 ton per 20GP. 4.Lead time:20-30 days. |
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What is the role of zinc sulfate heptahydrate in water treatment?
Zinc sulfate heptahydrate is a commonly used zinc fertilizer. Zinc is an essential micronutrient for crops, and its primary functions are as follows:
Promotes growth and prevents zinc deficiency disorders
Corrects zinc deficiency-induced disorders such as dwarf leaf disease, clustered leaf disease, yellowing seedlings, and stunted growth in crops. It addresses typical issues such as leaf curling in fruit trees, white seedlings in corn, and poor tillering in rice, thereby restoring plant vigor.
Enhances photosynthesis and metabolism
It participates in chlorophyll synthesis and enzyme activity, enhancing photosynthesis and promoting nutrient absorption and transport, resulting in dark green, robust leaves.
Promotes Flowering and Fruiting, and Improves Yield and Quality
It promotes flower bud differentiation and pollen development, reduces flower and fruit drop, and increases fruit set rates; it also improves fruit fullness, sugar content, and appearance, leading to higher yields and better quality.
Enhancing Stress Tolerance
Improves crops' resistance to drought, cold, and diseases, and alleviates growth inhibition caused by saline-alkali soils, low temperatures, and insufficient sunlight.
Application Methods: Can be used as a base fertilizer, for foliar spraying, seed soaking, or seed coating. Suitable for crops such as rice, corn, wheat, fruit trees, vegetables, and cotton.
Core Advantages of Our Products
- Appearance: Colorless, transparent prismatic crystals or white crystals, free from visible impurities and lumps.
- Solubility: Easily soluble in water, with no visible suspended particles after dissolution.
- Particle Size: Crystalline or granular, facilitating dissolution and dosing; moisture content ≤0.5%, non-caking.
Packaging and Transportation
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Standard Packaging: Double-layer packaging bags with inner plastic and outer woven layers, providing moisture resistance, leak prevention, and abrasion resistance. Standard specification is 25kg/bag; bulk bag packaging can be customized upon request.
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Packaging Labeling: Packaging can be customized according to customer requirements.
(IV) Safety Precautions
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This product is acidic. Avoid direct contact with skin or eyes. Wear gloves and safety goggles during handling. If contact occurs, immediately rinse thoroughly with copious amounts of water.
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Do not ingest. Store in areas clearly marked with "NOT FOR CONSUMPTION" warnings. Keep separate from food and animal feed.
- Shanxi Zhuolian Ruike Technology Co., Ltd. was established in 2014 and is located in the Zhangzi Economic Development Zone in Changzhi, Shanxi. With a registered capital of 10 million yuan, it is a national-level high-tech enterprise and a "Specialized, Refined, Distinctive, and Innovative" (SED) small and medium-sized enterprise.
- The company focuses on the R&D and production of crystallization processes and specialized supporting equipment. It has established a 55 million yuan pilot-scale R&D base and built a comprehensive technical system covering small-scale trials, pilot-scale testing, and mass production. Its main products include DTB crystallizers, MVR energy-saving evaporation units, continuous crystallization production units, and temperature controllers. These products are widely used in the pharmaceutical, chemical, and food industries.
- The DTB crystallizer can double production capacity and cut production time in half. Zhuolian Ruike holds multiple independent intellectual property rights, with annual revenue exceeding 50 million yuan. Technical services and high-end equipment account for over 60% of its revenue.
- The company has been honored with titles such as "Provincial-Level Emerging Private Technology Enterprise" and has filled several technological gaps within the province.
QA&QC
Q: What is your product?
A: It is Zinc Sulfate Heptahydrate.
Q: What' s the appearance?
A: It is white crystal or granular powder.
Q: Is it soluble in water?
A: Yes, it dissolves easily in water.
Q: Why does it sometimes cake?
A: It cakes easily during ocean shipping due to moisture and pressure.
Q: What' s the main usage?
A: It is mainly used in agriculture, feed and industry.
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