Magnesium Chloride CAS#7786-30-3
High Solubility: Magnesium chloride shows excellent solubility in water, and it is soluble in ethanol, while slightly soluble in acetone, which supports its broad usage in industrial and food-related fields.
Stable Performance: Its aqueous solution is weakly acidic, and the anhydrous form has strong moisture absorption capacity. The hydrate can keep stable under proper sealed storage conditions.
Versatile Uses: It is widely used as a de-icing agent, coagulant for tofu production, raw material for magnesium metal manufacturing, dust suppressant, and additive for cement and fireproof materials.
Crystalline Form & Hygroscopic Nature: Anhydrous magnesium chloride appears as a white crystalline solid with strong hygroscopicity; common hydrate forms include magnesium chloride hexahydrate, which needs sealed packaging to prevent moisture absorption and caking.
Magnesium chloride, characterized by the molecular formula MgCl₂, presents as a white crystalline solid with strong hygroscopic properties. It exhibits high solubility in water (543 g/L at 20°C), soluble in ethanol, and slightly soluble in acetone. A 10% aqueous solution of this compound shows a pH range of 4.5–6.0, and the aqueous solution has good stability at normal temperature. The substance may cause irritation to eyes, skin and respiratory tract, and it is utilized for preparing magnesium metal, snow melting agent, dust control agent, tofu coagulant, and also used in water treatment, building materials and feed additives.
Magnesium Chloride Chemical Properties
| Item | Specification |
|---|---|
| Melting point | 714 °C (anhydrous, lit.) |
| Boiling point | 1412 °C (anhydrous, lit.) |
| Density | 2.32 g/cm³ (anhydrous) |
| Refractive index | 1.675 |
| Storage temp | Store below +30°C, keep sealed |
| Solubility | Water: 543 g/L (20°C); soluble in ethanol, slightly soluble in acetone |
| Form | Crystalline solid |
| Color | White |
| Odor | Odorless |
| PH Range | 4.5–6.0 (10% aqueous solution, 20℃) |
| Water Solubility | 543 g/L (20 º C) |
| Sensitive | Hygroscopic |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases |
| CAS DataBase Reference | 7786-30-3 (CAS DataBase Reference) |
| NIST Chemistry Reference | Magnesium chloride (7786-30-3) |
| EPA Substance Registry System | Magnesium chloride (7786-30-3) |
Safety Information
| Item | Specification |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | OM2975000 |
| TSCA | Yes |
| HS Code | 28273100 |
This compound is employed as a raw material for producing metallic magnesium, snow and ice melting agent for roads, dust suppression agent for roads and mines, coagulant in food industry, feed mineral additive, and raw material for magnesium cement. It also functions as a water treatment agent, additive for textile finishing, and electrolyte component for battery materials. Additionally, it finds application as a fireproofing agent, refrigeration brine medium, and auxiliary agent in pigment and dye processing.
