MAGNESIUM SULFATE (EPSOM SALT), 99%, kg

Parameter	Property
Magnesium sulfate	Epsom salt (heptahydrate), English salt, Bitter salts, Bath salts
Formula	MgSO₄
Structure
IUPAC	Magnesium sulfate
INCI	MAGNESIUM SULFATE
CAS	10034-99-8 (heptahydrate)
Molar mass	246.47 g/mol (heptahydrate)
Density	1.68 g/cm³ (heptahydrate)
Solubility	In water: 113 g/100 mL (20 °C)

Epsom salt – magnesium heptahydrate (MgSO₄·7H₂O), also known as the mineral epsomite – is a natural mineral compound valued for its wide range of applications. Due to its specific chemical composition, it is widely used both at home and in industry. Its effects are based on natural properties and scientific research.

Epsom salt for plants

Magnesium salt - Used for foliar fertilization and watering, it dissolves easily and leaves no residue in the water. The high content of magnesium and sulfur promotes plant photosynthesis, growth, and development. Epsom salt can be used for additional soil fertilization, especially during periods of high demand when there is a magnesium deficiency. Magnesium sulfate is used in agriculture and gardening to correct magnesium deficiency in the soil.

Magnesium sulfate salt – an effective and easily absorbed fertilizer, its main advantage over other magnesium salts is its high solubility. This makes it particularly suitable for foliar fertilization. Compared to other magnesium fertilizers, magnesium sulfate has a neutral reaction and hardly affects the soil pH.

Epsom salt is widely used for plants

• In the garden – for fruit trees and berry bushes (e.g., currants, raspberries)
• In the greenhouse – Epsom salt for tomatoes, cucumbers, peppers
• In the vegetable patch – for lettuce, radishes, potatoes
• For ornamental plants – for roses, thujas, conifers
• For potted plants and lawns

Usage concentrations of magnesium sulfate salt

• Foliar fertilization - a 0.1–0.6% solution is used (10–60 g / 10 L of water)
• Magnesium sulfate salt for fruit trees and berry bushes - a 1% solution is sprayed (100 g / 10 L of water)
• Root fertilization - ornamental plants, flowers, and lawns are watered with a 0.2% solution (20 g / 10 L of water)

Magnesium sulfate salt for cosmetics

Magnesium sulfate salt is a widely used substance, especially in bath products. It acts as a functional base and an active ingredient, helping to soften the skin and prepare it for better absorption of active ingredients from other products, such as oils or lotions.

Epsom salt is chemically neutral – it does not react with organic ingredients and does not change the pH of the skin or water, making it a safe and stable choice for various formulas.

According to the INCI classification, magnesium sulfate (Epsom salt) performs the following functions:

• Bulking agent - Reduces the density of the product and gives it fluffiness – this is particularly important in the production of loose bath salts.
• Viscosity control - Helps to control the consistency of the final product – it can be used to thicken creams and lotions or, conversely, to thin out formulas as needed. Because of this, magnesium sulfate is widely used not only in bath salts but also in body scrubs, creams, and other cosmetic products.

In aquariums or aquaculture, magnesium sulfate heptahydrate is used to maintain a constant magnesium concentration in marine aquariums that house large quantities of corals. It is more slowly absorbed during cation exchange, so its reserves are depleted more slowly. Magnesium sulfate is used to stabilize alkalinity and calcium levels, as a magnesium deficiency causes calcium to shift from its ionic (soluble) form to a solid (non-absorbable) calcium carbonate form.

In the food industry, magnesium sulfate can be used as an additive in beer production to increase the amount of minerals needed for yeast growth or as a coagulant for tofu production.

Epsom salt for baths and sports

Magnesium sulfate baths are widely used in sports as an effective muscle recovery tool. They help reduce muscle tension, pain, and cramp symptoms after intense physical exertion. It is claimed that when soaking in salt-saturated water, magnesium ions can be absorbed through the skin (transdermally) and reach the muscle tissues and bloodstream faster than when taken orally. The large surface area of the body in contact with the solution increases efficiency.

Epsom salt is also used in ice baths to create a so-called “soft ice” effect. It lowers the freezing point of water, so the ice forms not in chunks but as a mass resembling wet snow. Using a higher concentration of between 3–5 kg, the entire contents of the bath become a single, soft mass. This texture conforms better to the body, reducing skin damage and the risk of frostbite.

Magnesium sulfate in medicine

Magnesium sulfate – is a pharmaceutical-grade active ingredient widely used in various clinical situations. Epsom salt is often used as the primary substance in the production of intravenous solutions for treating critical conditions.

Applications of Epsom salt

• In obstetrics: Used for the prevention and treatment of seizures associated with severe pre-eclampsia or eclampsia. Also used to suppress premature labor.
• In cardiology: Administered for the treatment of a specific type of ventricular tachycardia – torsades de pointes.
• In general medicine: Used for the prophylaxis and treatment of hypomagnesemia (critically low blood magnesium levels).
• In gastroenterology: Due to its osmotic effect, it is used orally as a short-term laxative.
• Daily use: Epsom salt can also be used for foot soaks – to reduce swelling, muscle tension, or foot pain. It is a simple but effective remedy, especially after a long day or physical exertion.

Magnesium sulfate in chemistry

Magnesium sulfate, especially its anhydrous form, is widely used in laboratories due to its specific chemical properties. One of its main purposes is as a drying agent in organic synthesis processes.

• Chemically inert - suitable for most solvents – does not affect the composition of the final product.
• Quickly and effectively binds water - forming a stable heptahydrate (MgSO₄·7H₂O).
• Effectiveness and price - It works quickly, is readily available, and economical, making it often used in both school and industrial settings.

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* - Product photos may not correspond to the actual appearance, color, configuration, or shape of the goods and their packaging. The information in the product description is of a general nature and may not coincide with the information on the product packaging, nor is it a precise method of use for the product. The data on product balances and prices may in some cases differ from the actual price and balances of the goods.