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Magnesium sulfate

CAS Number
7487-88-9
EC Number
686-508-9
Chemical Formula
H2O4S.Mg
Molecular Weight
120.37 g/mol

Description

Magnesium sulfate (CAS 7487-88-9 ), commonly known as Epsom salt and approved as food additive E518 , is an inorganic mineral salt sourced across food, pharmaceutical, agricultural, and industrial markets. It functions primarily as a nutrient source, processing aid, and stabilizer depending on the application sector. In agriculture, it corrects magnesium and sulfur deficiencies in soil and foliar spray programs. This directly improves crop yield and quality for commodity growers. Food and beverage manufacturers use it as a firming agent and magnesium fortification source in products such as tofu and brewing water adjustment. It is also utilized in mineral-enriched beverages. Pharmaceutical and nutraceutical formulators incorporate it as an active ingredient in laxative preparations and electrolyte formulations for various medical uses. In personal care, it is a functional bath soak ingredient and also used in cosmetic formulations where ionic mineral content affects texture and stability. Magnesium sulfate is supplied as anhydrous powder or crystals. The heptahydrate form is the most commercially prevalent. Recognized grades include USP , BP , Ph. Eur. , FCC , and technical grade, each targeting distinct end-use requirements for global manufacturers. Bulk agricultural and industrial supply is typically available in heptahydrate granules or powder. Pharmaceutical and food grades carry tighter purity and heavy metal specifications to ensure safety and compliance. Contact us for supply of Magnesium sulfate Request Quote

Other Names (Synonyms)

MgSO4 | epsom salt | english salt | magnesium sulphate | magnesium sulfate anhydrous | Sulfuric acid magnesium salt (1:1) | Magnesium sulfate (1:1) | Sal Angalis | E518

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point1124 °C (decomp)
Density2.66 g/cm³
AppearanceWhite crystalline powder
Colorslightly gray
Odorat 100.00 %. odorless
Formpowder (very fine)
Water SolubilitySoluble in water. Slightly soluble in alcohol, glycerol. Insoluble in acetone.
Vapor Pressure<0.1 mm Hg ( 20 °C)
pH7.9 (50g/l, H2O, 25℃)
Log P-1.031 (est)

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P501Dispose of contents/container in accordance with local regulations.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P364Take off contaminated clothing and wash it before reuse.

Trade & Regulatory

HS Code28332100
Storage Class13 - Non Combustible Solids
WGK (Germany)1