Magnesium Sulfate CAS#7487-88-9
High Solubility: Magnesium sulfate shows good solubility in water, and is sparingly soluble in ethanol, practically insoluble in ether and most organic solvents, which supports its wide usage in aqueous systems.
Stable pH: The 10% aqueous solution of this compound maintains a pH range of 5.0–7.0 at 25°C, and it remains stable under normal heating conditions without rapid decomposition.
Versatile Uses: It acts as a magnesium supplement in agriculture, a coagulant and additive in food industry, and a raw material for pharmaceutical preparations and analytical reagents.
Crystalline Form & Hygroscopic Nature: This material is supplied as a white crystalline solid with hygroscopic properties, suitable for industrial scenarios requiring precise weighing and sealed storage.
Magnesium sulfate, characterized by the molecular formula MgSO₄, presents as an odorless white crystalline solid. It is freely soluble in water (350 g/L at 20°C), sparingly soluble in ethanol, and insoluble in ether. A 10% aqueous solution of this compound has a pH of 5.0–7.0. The substance may cause mild irritation to eyes, skin and respiratory tract. It is utilized as a magnesium fertilizer, food processing additive, and laboratory analytical reagent.
Magnesium Sulfate Chemical Properties
| Item | Specification |
|---|---|
| Melting point | 1124 °C (decomposes)(lit.) |
| Density | 2.66 g/cm³ |
| Refractive index | 1.56 |
| Storage temp | Store below +30°C |
| Solubility | Soluble in water; sparingly soluble in ethanol; insoluble in ether |
| Form | Crystal / Powder |
| Color | White |
| Odor | Odorless |
| PH Range | 5.0–7.0 (100 g/l, H₂O, 20℃) |
| Water Solubility | 350 g/L (20 º C) |
| Sensitive | Hygroscopic |
| Stability | Stable under normal conditions. Incompatible with strong bases, strong oxidizing agents |
| InChIKey | CSNNHWWHGAXBCP-UHFFFAOYSA-L |
| CAS DataBase Reference | 7487-88-9 (CAS DataBase Reference) |
| NIST Chemistry Reference | Magnesium sulfate (7487-88-9) |
| EPA Substance Registry System | Sulfuric acid, magnesium salt (7487-88-9) |
Safety Information
| Item | Specification |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | OM4500000 |
| TSCA | Yes |
| HS Code | 28332100 |
This compound is employed as a nutrient additive for animal feed, a bath salt raw material in daily chemicals, and a coagulant in the production of tofu. It also functions as a drying agent, a filling agent for cement, a flocculant in wastewater treatment, and a stabilizer for latex. Additionally, it finds application as a raw material for manufacturing other magnesium salts, a textile mordant, and a fireproofing additive.
