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Magnesium hydroxide wholesale is used as an antacid and laxative. Magnesium hydroxide is an excellent flame retardant for plastics and rubber products. In terms of environmental protection, it can replace caustic soda and lime as a neutralizing agent for acid-containing wastewater. It is also used as an oil additive to play a role in anti-corrosion and desulfurization. In addition, it can also be used in the electronics industry, medicine, sugar refining, as insulation materials and the manufacture of other magnesium salt products.
Items | Specifications | Results |
Appearance | White or almost white, fine, amorphous powder. | Conform |
Solubility | Practically insoluble in water. It dissolves in dilute acids. | Conform |
Assay | 98.0-100.5% | 99.02% |
Soluble substances | ≤ 2.0% | <2.0% |
Substances Insoluble in acetic acid | ≤ 0.10% | 0.08% |
Sulfates | ≤ 1.0% | 0.1% |
Calcium | ≤ 1.5% | 0.01% |
Iron | ≤ 0.07% | 0.003% |
Lead | ≤1.5ppm | 0.07ppm |
Arsenic | ≤ 4ppm | 0.05ppm |
Loss on drying | ≤ 2.0% | 0.69% |
Loss on ignition | 29.0-33.0% | 31.59% |
Conclusion | The product conforms to the above specifications. | |
| Product parameters | |
| Cas number: | 1309-42-8 |
| Appearance: | White fine powder |
| Purity: | 95~100.5% |
| Package details: | 25kg/drum |
| Brand: | Fortunachem |
Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)₂. It is a white, crystalline solid that is poorly soluble in water. It occurs naturally as the mineral brucite.
Basic/Alkaline: It is a common antacid due to its mild, non-corrosive alkalinity.
Low Solubility: Releases hydroxide ions slowly.
Thermal Stability: Decomposes to magnesium oxide (MgO) and water vapor upon strong heating.
1. Medical & Pharmaceutical:
Antacid: Neutralizes excess stomach acid to relieve indigestion and heartburn (e.g., milk of magnesia).
Laxative: Its osmotic effect draws water into the intestines to relieve constipation.
2. Industrial:
Flame Retardant & Smoke Suppressant: Used in plastics, cables, and construction materials. When heated, it decomposes endothermically (absorbs heat) and releases water vapor, diluting flammable gases.
Wastewater Treatment: Precipitates and removes heavy metals and adjusts pH due to its alkalinity.
Precursor to Magnesium Oxide: Calcined (heated) to produce MgO, a refractory material.
3. Food & Agriculture:
Food Additive (E528): Used as an acidity regulator and firming agent.
Agricultural Additive: Corrects soil acidity and provides magnesium, an essential plant nutrient.
4. Other:
Sulfate Removal: Used in flue gas desulfurization and in treating mine water.
Safety: It is generally recognized as safe (GRAS) for consumption in regulated amounts and is considered low in toxicity.
It is mainly used as flame retardant, and can also be used in sugar refining and pharmaceutical industry.
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