Magnesium chloride hexahydrate

Magnesium chloride hexahydrate (CAS 7791-18-6), also written MgCl2·6H2O, is the hydrated crystalline form of magnesium chloride.

Where is Magnesium chloride hexahydrate used?

• Food manufacturing: coagulant for tofu and soy-based products
• Functional foods and beverages: magnesium fortification source
• Water treatment: flocculation and pH adjustment in municipal and industrial effluent systems
• Oil and gas drilling: dense brine component for well completion and workover fluids
• Agriculture: soil conditioning and foliar magnesium supplementation for magnesium-depleted crops
• It functions as a mineral source, coagulant, and pH-buffering agent where soluble magnesium delivery is needed.

Good to know: Food and pharma specifications require tighter limits on heavy metals and impurities. Grades include food-grade (FCC), pharmaceutical-grade (USP/BP) and technical-grade.

Commercial specifications

• Purity levels and packaging formats vary by grade