Product Description
Magnesium sulfate heptahydrate, denoted by the chemical formula MgSO4·7H2O, is an odorless crystalline compound characterized by its white or colorless needle-like or oblique columnar crystal structure. When subjected to thermal decomposition, this hydrated salt experiences a gradual, stepwise loss of its crystalline water molecules, ultimately converting into anhydrous magnesium sulfate. Owing to its versatile properties, the compound enjoys widespread use across diverse industrial sectors, such as fertilizer production, leather processing, printing and dyeing, catalyst manufacturing, papermaking, plastics, ceramics, pigments, matches, explosives, and fireproof materials.
In textile dyeing, magnesium sulfate heptahydrate is central to processing delicate cotton and silk fabrics. It performs a dual function: as a weighting agent to increase the density and texture of cotton fibers, and as a filler in kapok products to enhance their structural stability and aesthetic quality. In medicine, this compound is valued for its purgative effects, commonly used as a purgative salt to aid intestinal cleansing and treat specific gastrointestinal disorders under professional medical supervision.
The unique fusion of its physical traits-such as water solubility and distinct crystalline form-and chemical behaviors-including thermal decomposition rates-makes magnesium sulfate heptahydrate an essential material in both industrial manufacturing and specialized medical applications. Its capacity to serve multiple roles across various fields highlights its importance as a versatile chemical compound in modern industry and healthcare.
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
Catalysts and Intermediates
Serves as a precursor for synthesizing magnesium compounds like magnesium oxide and magnesium hydroxide, or functions as a desiccant in organic synthesis by leveraging its hygroscopic properties.
Plastics and Rubbers
Incorporated as a flame retardant into PVC and epoxy resin formulations to enhance material fire resistance; alternatively used as a filler to augment product hardness (e.g., in artificial leather and shoe soles).
Ceramics and Pigments
Applied in the preparation of high-temperature resistant ceramic glazes, or acts as a pigment carrier (such as a filler in white pigment manufacturing).
As a pulp filler, it enhances the whiteness and tear resistance of paper, widely applied in manufacturing printing paper and packaging paper. In cardboard processing, it acts as a component of waterproofing agents, boosting water resistance in humid conditions.
Textile Dyeing Auxiliaries
As a "weighting agent" in cotton and silk dyeing, it enhances fabric handfeel by adsorbing dyes. For instance, it fixes pigments in silk printing to prevent color fading. In kapok products, it acts as a filler to boost material density and thermal insulation.
Leather Tanning
It regulates the pH of tanning liquors, facilitates the penetration of vegetable tannins, and improves leather softness. This makes it particularly suitable for high-end vegetable-tanned leathers (e.g., leather goods and shoe materials).
Packaging & Shipping
1. Temperature and Humidity Management
Store in cool, dry environments where temperatures remain below 30°C and relative humidity does not exceed 60% to prevent hygroscopic moisture absorption or efflorescence.
Avoid areas with unstable temperatures, as exposure to heat above 67.5°C may trigger autodissolution of the compound in its crystalline water.
2. Airtight Packaging Requirements
Use sealed containers (e.g., PE-lined woven bags or airtight steel drums) to isolate the material from atmospheric moisture, which can cause caking or dehydration-induced instability.
3. Ventilation and Palletization Guidelines
Ensure storage spaces are well-ventilated to dissipate moisture vapor, especially in industrial warehouse settings.
Elevate containers on pallets with a minimum 15 cm clearance from the ground to facilitate unobstructed airflow and prevent direct contact with damp surfaces.
4. Chemical Compatibility Protocols
Keep segregated from acidic, alkaline, or volatile chemicals to prevent degradation from reactive interactions.
Store separately from strong oxidizers and other incompatible substances following hazardous material storage regulations.
5. Light and Thermal Protection Measures
Store in shaded areas or use opaque coverings to shield from direct sunlight, as prolonged exposure accelerates thermal decomposition of the compound.
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!
Exhibitions and Customers
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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