1. Pharmaceuticals 

• Magnesium Supplement in IV and Oral Solutions:  Used in formulations to correct magnesium deficiency (hypomagnesemia) via intravenous or oral administration. It provides highly bioavailable magnesium ions critical for muscle, nerve, and enzymatic functions.
• Laxative Component: Acts as an osmotic laxative, drawing water into the intestine to stimulate bowel movement. Often found in combination with other magnesium salts in over-the-counter digestive aids.

2. Food & Healthcare Ingredients

• Firming Agent & Coagulant:  In tofu manufacturing, it serves as a coagulant (known as nigari) to curdle soy milk into tofu. It is also used in canned vegetables and seafood to maintain texture.
• Magnesium Fortifier: Used to fortify beverages, supplements, and health foods with magnesium. Magnesium is an essential dietary mineral often lacking in modern diets.

3. Agrochemicals

• Fertilizer and Micronutrient Supplement: Supplies essential magnesium and chloride ions in foliar sprays or soil applications to correct magnesium deficiencies in crops like citrus, tomatoes, and potatoes.
• Soil Conditioner in Saline-Affected Soils:  Helps to displace sodium ions in sodic soils and improves soil structure. It can also enhance water penetration in heavy clay soils.

4. Water Treatment

• Coagulant in Wastewater Treatment: Acts as a coagulant or flocculant in industrial and municipal wastewater treatment, aiding in the removal of suspended solids and phosphates.
• Dechlorination and pH Control Agent: Used to neutralize residual chlorine in water or adjust pH during treatment processes.

5. Construction 

• Additive in Magnesium Oxychloride Cement (Sorel Cement): Used in the preparation of high-strength, fast-setting cements for flooring, fire-resistant panels, and abrasive wheels.
• Anti-Dust and Hardening Agent for Roads: Sprayed on unpaved roads to suppress dust and improve surface binding. It also increases soil compaction and prevents erosion.

6. Energy

• Dust Suppressant & De-Icing Agent: Magnesium chloride hexahydrate is applied to roads, runways, and work sites to prevent dust and ice formation due to its hygroscopic nature and low freezing point.
• Drilling Mud Additive: Added to drilling fluids as a shale stabilizer and to control ionic balance.