Product Description
Magnesium sulfate heptahydrate, represented by the chemical formula MgSO4·7H2O, is an odorless crystalline compound characterized by its white or colorless needle-like or oblique columnar crystals. When subjected to thermal decomposition, this hydrated salt gradually loses its crystalline water molecules in a stepwise manner, ultimately converting to anhydrous magnesium sulfate. Due to its versatile properties, the compound is widely used in various industrial sectors, such as fertilizer production, leather processing, printing and dyeing, catalyst manufacturing, papermaking, plastics, ceramics, pigments, matches, explosives, and fireproof materials.
Product Parameters
| Item |
Specification |
| Purity %min |
99 |
| MgSO4 |
48.59 |
| MgO %min |
16.24 |
| Mg %min |
9.88 |
| PH (5% Solution) |
5.0-9.2 |
| Iron(Fe) % max |
0.0015 |
| Cl %max |
0.014 |
| Heavy metal (as Pb)%max |
0.0006 |
| (As)%max |
0.0002 |
Application
As a dual-nutrient fertilizer, magnesium sulfate heptahydrate provides essential magnesium and sulfur for plant growth. Magnesium, a key component of chlorophyll, boosts photosynthetic efficiency, while sulfur supports amino acid and enzyme synthesis. It is widely applied to rectify magnesium deficiency in crops such as citrus, potatoes, and tomatoes, enhancing yields by up to 15%. As a soil conditioner, it neutralizes acidic soils, improves structure, and enhances nutrient availability, especially in areas with leached or sandy soils.
Textile and Leather Sectors
In textile dyeing, it functions as a weighting agent for cotton and silk, adsorbing dyes to enhance fabric density and tactile quality. For kapok products, it serves as a filler to improve thermal insulation and structural integrity. During leather tanning, it regulates the pH of tanning solutions, promoting the penetration of vegetable tannins and enhancing leather softness-particularly for high-end vegetable-tanned leathers used in luxury goods and footwear.
Chemical and Material Production
As a catalyst or intermediate, it is used in synthesizing magnesium compounds (e.g., magnesium oxide, magnesium hydroxide) and acts as a desiccant in organic synthesis. In plastics and rubbers, it serves as a flame retardant in PVC and epoxy resin formulations while also increasing hardness as a filler in artificial leather and shoe soles.
Paper and Packaging
As a pulp filler, it enhances paper whiteness and tear resistance in printing and packaging paper production. In cardboard processing, it acts as a component of waterproofing agents, boosting resistance to humid environments.
Environmental and Water Treatment
As a coagulant in wastewater treatment, it facilitates the removal of heavy metals (e.g., lead) by forming insoluble hydroxides. It also regulates soil pH and reduces the bioavailability of heavy metals in contaminated soils, supporting phytoremediation initiatives.
Packaging & Shipping
Environmental Control Requirements
Store in cool, dry areas with temperatures ≤30°C and relative humidity ≤60% to prevent hygroscopic moisture absorption or efflorescence. Avoid thermal variations exceeding 67.5°C, as this may induce autodissolution of the compound in its crystalline water.
Packaging and Isolation Protocols
Use airtight containers (e.g., PE-lined sacks or hermetic steel drums) to protect against atmospheric moisture, which can cause caking or dehydration-induced instability.
Segregate from acidic/alkaline chemicals, volatile substances, and strong oxidizers in compliance with hazardous material storage regulations to prevent reactive degradation.
Warehouse Management Practices
Adopt ventilated storage with palletized stacking (≥15 cm ground clearance) to ensure unobstructed airflow and prevent contact with damp surfaces.
Use opaque coverings or store in shaded areas to mitigate risks of thermal decomposition from prolonged sunlight exposure.
Summary Highlights
Thermal-Humidity Control: Maintain strict temperature/humidity thresholds to prevent physical degradation (e.g., autodissolution, efflorescence).
Packaging Integrity: Airtight containers and chemical segregation serve as core safeguards against moisture and reactive degradation.
Operational Protocols: Ventilation, palletization, and light shielding ensure product stability in industrial storage systems.
Certifications and Reviews
Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
FAQ
Q: How long is your delivery time?
A: It usually takes 7-10 days if the goods are in stock, or 10-15 days if the goods are not, depending on the quantity ordered.
Q: Can you support OEM ?
A: Yes, we can make products as your request.
Q: Do you provide samples?
A: Yes, we could offer the sample for free by requests but are not responsible for the freight cost.
Q: What payment terms do you accept?
A: We accept T/T, L/C at sight;
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