1. Product Physical & Chemical Properties
Zinc sulfate appears as colorless or white rhombic crystals or powder at room temperature. It has convergence property and is easily soluble in water with its aqueous solution being acidic. It is slightly soluble in ethanol and glycerol. Pure zinc sulfate can be stored in the air for a long time without turning yellow. It can lose water to become white powder when placed in dry air. There are various kinds of hydrates: in the range of 0-39 ° C, its stable hydrate balanced with aqueous phase is zinc sulfate heptahydrate; in the range of 39-60 ° C, it is hexahydrate zinc sulfate. At the range of 60-100 °C, it will become zinc sulfate monohydrate. When being heated to 280 °C, various kinds of hydrate will completely lose water with decomposition into zinc sulfate at 680 °C and further decomposition at above 750 ° C and finally decomposition into zinc oxide and sulfur trioxide at about 930 °C. ZnSO4 • 7H2O can form mixed crystal with MSO4 • 7H2O (M = Mg, Fe, Mn, Co, Ni) within a certain range.
2. Core Product Features & Advantages
Our high-purity zinc sulfate series products feature stable chemical properties, low impurity content and uniform crystal fineness. Strict purification and refining processes effectively eliminate heavy metal residues and insoluble impurities, ensuring high safety and high reactivity in practical application. Different hydrated forms (monohydrate, heptahydrate, hexahydrate) maintain stable structural characteristics under corresponding temperature environments, avoiding rapid deterioration and failure caused by temperature changes. In addition, the product has excellent compound compatibility, which can be well mixed with most trace element fertilizers, industrial additives and chemical raw materials without chemical rejection or precipitation reaction. It boasts long-term storage stability, not easy to agglomerate or discolor in standard sealed storage conditions, greatly reducing product loss during transportation and inventory.
3. Wide Application Scenarios
3.1 Industrial Manufacturing Industry
Zinc sulfate serves as a core raw material for synthesizing lithopone, zinc barium white and various zinc-based chemical compounds, which are widely used in paint, coating, rubber and plastic industries to improve product color fastness and anti-aging performance. It is an essential electrolyte reagent for electrolytic zinc production, stabilizing electrolytic solution concentration and improving metal zinc precipitation efficiency. In textile industry, it acts as a high-efficiency mordant, enhancing dye adhesion and improving textile color uniformity and washing fastness. Besides, it is widely applied in wood and leather processing as fungicide and preservative, effectively inhibiting microbial growth and extending the service life of wood and leather products.
3.2 Agricultural Planting Field
As a high-quality trace element zinc fertilizer, zinc sulfate supplements essential zinc elements for crops, effectively improving zinc deficiency symptoms such as slow growth, yellow leaves and low fruiting rate of grains, vegetables, fruits and cash crops. It can regulate crop photosynthesis and enzyme activity, promote root development and fruit expansion, and significantly improve crop yield and quality. It is compatible with most water-soluble fertilizers and pesticides, suitable for base fertilizer, topdressing, foliar spraying and drip irrigation fertilization, meeting the diversified fertilization needs of modern precision agriculture.
3.3 Animal Feed & Nutrition Industry
As a professional feed grade zinc additive, zinc sulfate provides sufficient zinc nutrition for livestock and poultry, aquatic animals and special breeding animals. Zinc elements participate in animal immune metabolism and bone development, which can effectively prevent animal zinc deficiency diseases, improve animal immunity and disease resistance, reduce breeding mortality, and promote healthy growth and weight gain of animals. With fine powder solubility and no harmful residues, it conforms to international feed safety standards and is suitable for long-term additive use in various breeding feeds.
3.4 Pharmaceutical & Water Treatment Industry
In the pharmaceutical industry, high-purity zinc sulfate can be used to prepare mild emetic agents, astringents and antibacterial preparations, with stable medicinal properties and high safety. In industrial water treatment and domestic water purification, it serves as a coagulant aid and antibacterial agent, removing suspended impurities and inhibiting bacterial reproduction in water body, improving water quality stability. It is also applicable in mineral flotation industry as a regulating agent to optimize flotation efficiency and improve mineral separation purity.
4. Production Process & Quality Control
The product is professionally produced through two mature processes: one is the chemical synthesis reaction of high-purity zinc raw materials or zinc oxide with industrial-grade concentrated sulfuric acid, with precise ratio control and full reaction to ensure high product purity; the other is processed by baking high-quality sphalerite in professional baking furnaces, followed by multi-stage extraction, impurity removal, concentration and refining. The whole production process adopts closed automatic production lines, avoiding external pollution.
We implement strict full-process quality inspection standards. Raw material incoming inspection, production intermediate sampling inspection and finished product delivery inspection are carried out layer by layer. All indicators including purity, impurity content, solubility and PH value comply with international industrial and agricultural grade standards. Each batch of products is equipped with complete COA quality inspection report to ensure stable and consistent product quality.
5. Product Specifications & Technical Parameters
We supply multiple specifications of zinc sulfate to meet differentiated customer demands, including zinc sulfate monohydrate, zinc sulfate heptahydrate and zinc sulfate hexahydrate. All products feature high solubility, low moisture content and uniform particle size. Customized specifications and purity grades (industrial grade, agricultural grade, feed grade) are supported to adapt to different application scenarios such as industrial production, agricultural planting and animal breeding. Customized processing services can be provided according to customer’s special technical indicators and formula requirements.
6. Packaging, Transportation & Storage
6.1 Packaging Standard
Conventional packaging adopts 25kg woven bags with inner plastic lining, which is moisture-proof, dust-proof and wear-resistant. Large-volume goods can be packaged with 1000kg IBC ton bags, and liquid zinc sulfate solution is packed in 200L plastic drums or IBC tanks. All packaging materials are thickened and customized, with strong compression resistance and drop resistance, effectively avoiding product leakage, moisture absorption and agglomeration during long-distance transportation. Customized packaging and logo printing services are available according to customer requirements.
6.2 Transportation Instructions
Zinc sulfate belongs to general ordinary chemical products, non-flammable, non-explosive and non-dangerous goods, with convenient transportation conditions. We support sea freight, land freight and multimodal transportation, and provide full container load (FCL) and less than container load (LCL) shipping services. The MOQ is 1 FCL for bulk orders to ensure customers get the most competitive factory price. Our professional logistics team arranges shipment in advance, optimizes transportation routes, and guarantees timely and stable delivery.
6.3 Storage Conditions
The product should be stored in a dry, ventilated and clean warehouse, avoiding long-term exposure to direct sunlight, high temperature and humid environment. It is strictly prohibited to store together with alkaline substances, oxidants and toxic chemicals to prevent chemical reaction and product deterioration. Sealed storage can effectively maintain product activity and extend the storage cycle. The dried and sealed product can be stored for a long time without discoloration or deterioration.
7. After-sales Service & Customer Guarantee
We provide one-stop full-cycle after-sales service for all customers. Before shipment, we will sort out complete customs clearance documents including COA, SDS, packing list and invoice to support smooth customer customs clearance. During transportation, we track the logistics status in real time and feed back the shipment progress regularly. For product quality problems caused by our production and packaging, we support unconditional replacement and compensation.
We have a professional technical team to provide free technical guidance, including product usage methods, formula matching, storage precautions and fault solutions. Long-term stable supply guarantee is provided for old customers, with priority shipment and preferential price policies to help customers stabilize market operation.
8. Cooperative Customer Cases
Our zinc sulfate products have been exported to more than 30 countries and regions such as Southeast Asia, Africa, Middle East, Europe and South America, and have established long-term stable cooperative relations with agricultural fertilizer manufacturers, feed processing enterprises, chemical raw material factories and textile processing enterprises worldwide. Relying on stable product quality and professional service system, we have won high recognition and repeated purchase from global customers. We have rich experience in bulk container export and international trade, which can fully meet the procurement needs of large industrial and agricultural enterprises.
9. FAQ (Frequently Asked Questions)
Q1: What grades of zinc sulfate can you supply?
We can provide industrial grade, agricultural grade and feed grade zinc sulfate, covering monohydrate, heptahydrate and hexahydrate types. Customized purity and indicator standards are supported according to customer’s application scenarios.
Q2: What is your MOQ and delivery time?
The minimum order quantity is 1 FCL. For conventional specifications, we have sufficient stock, and the delivery time is 3-7 working days after receiving the deposit. For customized products, the delivery time will be negotiated according to the production cycle.
Q3: Can you provide official certification documents?
Yes. We can provide complete supporting documents such as COA quality certificate, SDS safety data sheet, packing list, commercial invoice and other customs clearance documents to meet the import requirements of various countries.
Q4: How to avoid product agglomeration during transportation and storage?
Our products adopt moisture-proof and sealed packaging. Customers only need to store them in a dry and ventilated environment, avoid humid environment and mixed storage with alkaline substances, which can effectively prevent agglomeration. We also provide professional storage and usage guidance for free.
Q5: Do you support OEM/ODM customization?
Yes. We support customized product indicators, packaging styles, brand logo printing and private formula processing to meet the personalized procurement needs of different customers and distributors.
