Product Description
| Product Name |
Magnesium sulfate heptahydrate |
| Molecular Formula |
MgSO4.7H2O |
| CAS |
10034-99-8 |
| Product Details |
Magnesium sulfate heptahydrate, scientifically characterized by the chemical formula MgSO4·7H2O, presents itself as an odorless crystalline compound exhibiting a white or colorless appearance with distinct needle-shaped or oblique columnar structures. This hydrous salt, when exposed to thermal decomposition processes, undergoes a gradual and systematic loss of its crystalline water molecules, ultimately transforming into the anhydrous form of magnesium sulfate. The compound's versatile nature has led to its extensive utilization across a broad spectrum of industrial sectors, including but not limited to fertilizer production, leather processing, printing and dyeing operations, catalyst manufacturing, papermaking, plastics production, ceramics, pigments, matches, explosives, and fireproof materials.
In the realm of textile dyeing, magnesium sulfate heptahydrate plays a crucial role in the treatment of thin cotton textiles and silk fabrics. Here, it serves a dual function: acting as a weighting agent to enhance the density and texture of cotton fibers, while simultaneously functioning as a filler in kapok products to improve their structural integrity and aesthetic qualities. From a medical perspective, this compound is valued for its purgative properties, commonly employed as a purgative salt to facilitate intestinal cleansing and address certain gastrointestinal conditions under professional medical supervision.
The unique combination of its physical characteristics-such as solubility in water and distinct crystalline structure-and chemical behavior-including thermal decomposition kinetics-renders magnesium sulfate heptahydrate an indispensable material in both industrial manufacturing processes and specific medical applications. Its ability to serve multiple roles across diverse fields underscores its significance 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
In leather manufacturing, magnesium sulfate heptahydrate (MgSO4·7H2O) functions as a supplementary tanning agent or auxiliary, playing a crucial role in two main aspects. It regulates the pH of tanning baths by adjusting the acidity of tanning liquors, often used in conjunction with vegetable tannins or chrome salts to stabilize the pH at the optimal range of 4.5-5.5, which facilitates the uniform penetration of tannins into leather fibers. By preventing excessive acidity, it avoids protein denaturation and ensures the leather maintains consistent softness and flexibility. Additionally, during the retanning stage, it acts as a mild crosslinking agent to enhance the bonding between leather fibers and tannins, thereby improving the material's tensile strength and tear resistance. Its hygroscopic properties also help retain moisture in the leather, contributing to a supple texture and preventing brittleness, particularly in vegetable-tanned leathers.
As a Magnesium and Sulfur Fertilizer
Magnesium sulfate heptahydrate (MgSO4·7H2O) is widely used as a water-soluble fertilizer, supplying two essential plant nutrients:
Magnesium: A key component of chlorophyll, vital for photosynthesis. It also activates enzymes involved in carbohydrate metabolism and protein synthesis.
Sulfur: Essential for amino acid (cysteine, methionine) and vitamin (thiamine) formation, promoting root development and crop resistance to stress.
Application Scenarios:
Soil Amendment: Applied to magnesium-deficient soils (e.g., sandy or acidic soils), where crops show symptoms like interveinal chlorosis (yellowing between leaf veins).
Foliar Spray: Diluted solutions (0.5-2% concentration) are sprayed on leaves to correct rapid magnesium deficiencies in crops like citrus, tobacco, and potatoes.
Hydroponics and Greenhouse Cultivation: Used in nutrient solutions for precise nutrient control, ensuring balanced growth in soilless systems.
Chemical Industry and CatalystsUsed as a raw material for preparing other magnesium compounds (such as magnesium oxide and magnesium hydroxide), or for producing flame retardants and polishing agents.
Used as a catalyst or desiccant in organic synthesis (utilizing its water absorption property).
Dyeing and TextileUsed as a dyeing auxiliary for textiles such as cotton and silk, playing a role in color fixing and weight gain: As a "weighting agent" during cotton fiber dyeing, improving the hand feel and luster of the fabric;
Used to fill kapok products, increasing the material density.
Leather, Papermaking and PlasticsUsed as a tanning agent in leather processing, helping to fix dyes and improve leather softness;
Used as a pulp filler in the paper industry, improving paper strength and whiteness;
Used as a flame retardant or modified additive in plastic production, improving material properties.
Packaging & Shipping
1. Temperature and Humidity Management
Maintain storage in cool, dry environments with temperatures below 30°C and relative humidity not exceeding 60% to prevent moisture absorption or efflorescence.
Avoid areas with fluctuating temperatures, as exposure to heat above 67.5°C may trigger autodissolution of the compound in its crystalline water.
2. Airtight Packaging Mandates
Use sealed containers (e.g., polyethylene-lined woven bags or hermetic steel drums) to isolate the material from atmospheric moisture, which can cause caking or dehydration-induced instability.
3. Ventilation and Palletization Practices
Ensure storage areas 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 Guidelines
Segregate from acidic, alkaline, or volatile chemicals to avoid degradation from reactive interactions.
Store separately from strong oxidizers and other incompatible substances in compliance with hazardous material storage protocols.
5. Light and Heat 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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