Product Description
Magnesium Sulfate Heptahydrate Product Description
1. Basic Information
- Magnesium sulfate heptahydrate, with the chemical formula MgSO4·7H2O, is a hydrated salt commonly known as Epsom salt. It consists of one magnesium cation (Mg2+), one sulfate anion (SO42-), and seven water molecules within its crystal lattice, giving it a molar mass of approximately 246.47 g/mol. This compound has a wide range of applications across different industries due to its unique physical and chemical properties.
2. Physical and Chemical Properties
2.1 Physical Properties
- Appearance: In its pure form, magnesium sulfate heptahydrate appears as colorless, monoclinic crystals or a fine, white powder. The crystals have a vitreous luster and are odorless, making them suitable for various applications where smell is a concern.
- Solubility: It is highly soluble in water, with a solubility of about 26.9 g/100 mL at 20°C. The solubility increases with rising temperature, following an endothermic dissolution process. It is sparingly soluble in ethanol and insoluble in most organic solvents.
- Thermal Behavior: When heated, it undergoes a series of dehydration reactions. Starting at around 48°C, it begins to lose water molecules, transforming into lower hydrates. At temperatures above 200°C, it completely dehydrates to form anhydrous magnesium sulfate.
2.2 Chemical Properties
- Stability: In normal environmental conditions, magnesium sulfate heptahydrate is stable. However, it can lose its water of crystallization when exposed to heat or desiccating agents.
- Reactivity: It can react with strong bases to form insoluble magnesium hydroxide precipitates. In acidic solutions, it remains in ionic form, contributing to the solution's conductivity. It also participates in metathesis reactions with other soluble salts under appropriate conditions.
3. Production Methods
3.1 Natural Extraction
- Natural deposits in salt lakes, brine wells, and mineral springs are significant sources of magnesium sulfate heptahydrate. The brine is pumped to the surface and then subjected to evaporation, either through solar evaporation in large ponds or mechanical evaporation. As the water evaporates, the compound precipitates out, which is then harvested, washed to remove impurities, and dried.
3.2 Chemical Synthesis
- It can be produced by reacting sulfuric acid with magnesium - containing compounds such as magnesium oxide (MgO), magnesium hydroxide (Mg(OH)2), or magnesium carbonate (MgCO3).
- This reaction is highly exothermic. After the reaction, the solution is filtered to remove impurities, and the magnesium sulfate heptahydrate is crystallized through cooling or evaporation.
4. Quality and Purity Standards
- Purity Requirements: Industrial - grade magnesium sulfate heptahydrate typically requires a minimum purity of 99%. For applications in pharmaceuticals, food, and cosmetics, even higher purity levels are necessary. Strict limits are set for heavy metal impurities, often within parts per million (ppm) or parts per billion (ppb) ranges.
- Quality Control Methods: Analytical techniques like titration are used to determine the magnesium content. Atomic absorption spectroscopy and inductively coupled plasma - optical emission spectroscopy (ICP - OES) are employed to detect trace heavy metals. X - ray diffraction (XRD) is used to analyze the crystal structure, and moisture analysis monitors the water content.
5. Storage and Handling
- Storage Conditions: Store in a cool, dry place away from direct sunlight and heat sources to prevent dehydration. Use tightly sealed containers to avoid moisture absorption, which can cause caking.
- Handling Precautions: Although generally non - hazardous, wear gloves and safety goggles when handling large quantities to prevent eye and skin contact. In case of contact, rinse immediately with water.
Appearance:
colorless or white crystals
Size:
Magnesium sulfate heptahydrate 0.1mm~1mm
Magnesium sulfate heptahydrate 1~3mm
Magnesium sulfate heptahydrate 2~4mm
Product Parameters
TEST ITEMS
|
TEST STANDARD |
TEST RESULT |
| PURITY |
≥99.5% |
99.68% |
| MAGNESIUM SULFATE(MgSO4) |
≥48.0% |
48.38% |
| MAGNESIUM OXIDE (MgO) |
≥16.0% |
16.24% |
| MAGNESIUM(Mg) |
≥9.8% |
9.85% |
| SULFUR (S) |
≥12.5% |
12.5% |
| WATER INSOLUBLE |
≤0.10% |
0.06% |
| Fe |
≤0.0015% |
<0.0015% |
| As |
≤0.0005% |
<0.0001% |
| HEAVY METAL (AS Pb) |
≤0.002% |
0.0002% |
| CHLORIDE |
≤0.0014% |
<0.0014% |
Application
Agriculture Printing and Dyeing Industry Paper-making Industry
Sewage Treatment Glass and Ceramic Industry Leather-making Industry
1. Agriculture and Horticulture
- Fertilizer and Soil Amendment: Supplies essential magnesium and sulfur for plant growth, correcting soil deficiencies. It improves soil structure, increases water - holding capacity, and enhances nutrient availability, boosting crop yield and quality.
- Animal Feed Additive: Prevents magnesium deficiencies in livestock, supporting nerve function, muscle contraction, and bone health. It is easily incorporated into feed formulations.
2. Cosmetics and Personal Care
- Skin Care: Used in body scrubs as an exfoliant, and in moisturizers and masks to improve skin texture and hydration.
- Hair Care: Added to shampoos and conditioners to reduce frizz, add shine, and strengthen hair.
3. Industrial Applications
- Textile Industry: Serves as a mordant to fix dyes onto fabrics, improving colorfastness and even color distribution.
- Paper Industry: Functions as a filler to enhance paper opacity and brightness, and as a sizing agent to reduce ink absorption.
- Chemical Manufacturing: A raw material for producing anhydrous magnesium sulfate, fireproof materials, rubber additives, and other magnesium - based compounds.
Packaging & Shipping
Packaging
25kg bag 50kg bag 1000kg bag
Shipping
We mainly ship products by MSK, COSCO, MSC, MCC, CMA, OOCL, APL,HPL, ONE, WANHAI.
Certifications
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!
Customer Reviews
FAQ
Q1: Is this product safe to handle?
A: Yes, it is generally considered safe and non-toxic under normal handling conditions. However, we recommend wearing gloves and a mask to avoid prolonged skin or inhalation exposure, especially in large-scale use.
Q2: What is the shelf life of this product?
A: The shelf life is 2 years when stored in a cool, dry, and well-ventilated area. It should be kept away from moisture to prevent caking or decomposition.
Q3: What packaging options are available?
A: Standard packaging includes 25kg or 50kg plastic woven bags with inner liners. We also offer jumbo bags and customized bag marks according to your requirements.
Q4: Can you provide documents such as COA, MSDS, or TDS?
A: Absolutely. We can provide Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), Technical Data Sheet (TDS), and other documents as needed for customs or technical review.
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