Overview
Magnesium sulfate heptahydrate, often referred to as Epsom salt, is a hydrated form of magnesium sulfate. It is a white, crystalline solid that is highly soluble in water. The compound is widely recognized for its applications in agriculture, medicine, and various industrial processes. Magnesium sulfate heptahydrate is an essential source of magnesium, a vital nutrient for plants and animals. Its solubility and bioavailability make it a preferred choice in fertilizers and medical treatments. The compound is also used in the production of textiles, paper, and other industrial goods.
Physical and Chemical Properties
Magnesium sulfate heptahydrate is characterized by its white crystalline appearance and high solubility in water. It has a molecular weight of 246.47 g/mol and a density of 1.68 g/cm³. The compound dehydrates at 150°C, losing its water molecules to form anhydrous magnesium sulfate. The heptahydrate form is stable under normal conditions but should be stored in a dry environment to prevent caking or dissolution due to moisture absorption. Its solubility in water makes it an effective delivery vehicle for magnesium and sulfate ions in various applications.
Main Applications
In agriculture, magnesium sulfate heptahydrate is used as a fertilizer to correct magnesium deficiency in soils. It provides both magnesium and sulfur, essential nutrients for plant growth. The compound is also used in hydroponic systems and foliar sprays. In medicine, it serves as a laxative and a remedy for magnesium deficiency. Industrial applications include its use in the production of textiles, paper, and detergents. Additionally, it is employed in water treatment and as a coagulant in the manufacturing of tofu.
Safety and Storage
Magnesium sulfate heptahydrate is generally considered safe but can cause irritation to the skin, eyes, and respiratory tract in concentrated forms. Proper personal protective equipment (PPE) such as gloves and goggles should be used when handling the compound. Storage should be in a cool, dry place, away from moisture to prevent caking or dissolution. Containers should be tightly sealed to avoid exposure to humid air. In case of accidental ingestion or exposure, seek medical advice immediately.
B2B Procurement Guide
When procuring magnesium sulfate heptahydrate, buyers should verify the purity and quality of the product. Certificates of analysis (CoA) from suppliers are essential to ensure the compound meets industry standards. Bulk purchases typically offer cost savings, but storage capacity should be considered. Suppliers should be evaluated based on their reliability, delivery timelines, and compliance with safety regulations. Price negotiations should take into account the current market rates, which can fluctuate based on demand and raw material costs.
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