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China, Chinese Magnesium Hydroxide Mg (OH) 2 CAS 1309-42-8 for Fertilizer Additive1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Inorganic ChemicalsAlkaliMagnesium Hydroxide PowderMagnesium Hydroxide Suppliers
Hubei Chica Industrial Co., Ltd.
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Product Description Magnesium Hydroxide Product Description1. Product OverviewMagnesium Hydroxide (chemical formula: Mg(OH)2) is a white, odorless, fine powder with a slightly alkaline nature. It is a sparingly soluble inorganic compound with a high decomposition temperature and excellent flame retardant, acid-neutralizing, and smoke-suppressing properties. As an environmentally friendly material, it is widely used in chemical, environmental, p-h-a-rmaceutical, plastic, rubber, and other industrial sectors. With increasing global demand for halogen-free flame retardants and green chemicals, magnesium hydroxide has become an essential raw material in modern industry. 2. Chemical and Physical PropertiesChemical Name: Magnesium HydroxideMolecular Formula: Mg(OH)2Molecular Weight: 58.32 g/molAppearance: White powderOdor: OdorlessMelting Point: Decomposes at ~350°CSolubility in Water: Slightly soluble (0.0009 g/100 mL at 18°C)pH (10% suspension): 10.5-11.5Decomposition: Produces magnesium oxide and waterReactivity: Reacts with acids to form magnesium salts and water3. Production ProcessMagnesium hydroxide can be produced via various methods, including:Natural Mining: Refinement of brucite, a naturally occurring mineral form of Mg(OH)2.Precipitation Process: Reacting a soluble magnesium salt (e.g., magnesium chloride or magnesium sulfate) with an alkaline solution (e.g., s-o-dium hydroxide or a-m-monia water).Seawater Method: Common in coastal regions, involves reacting seawater-derived magnesium ions with lime.The choice of process affects the purity, particle size, specific surface area, and application of the final product. For industrial and p-h-a-rmaceutical applications, synthetic magnesium hydroxide offers better control over purity and consistency.4. Key Applications(1) Flame Retardant and Smoke SuppressantMagnesium hydroxide decomposes endothermically at approximately 340-350°C, absorbing heat and releasing water vapor, which dilutes combustible gases and cools the combustion surface. Its residue, magnesium oxide (MgO), forms a protective layer that suppresses further ignition. It is widely used in:Cables and wiresPolyolefin plasticsEVA foamPVC and rubber productsFireproof coatings(2) Wastewater TreatmentAs an alkaline agent, magnesium hydroxide effectively neutralizes acidic wastewater, stabilizes pH, and precipitates heavy metals. Its advantages over traditional c-a-ustic soda (NaOH) include:Safer handlingSlower, more controlled neutralizationLong-lasting buffering capacityLower environmental impact(3) P-h-a-rmaceuticalsMagnesium hydroxide is used as:Antacid: Relieves indigestion and heartburn by neutralizing stomach acid.Laxative: Stimulates bowel movements by retaining water in the intestines.It is a key ingredient in over-the-counter antacid tablets and milk of magnesia formulations.(4) Flue Gas Desulfurization (FGD)Magnesium hydroxide reacts with s-u-lfur dioxide (SO2) in industrial exhaust gas streams to produce magnesium sulfite/sulfate, effectively reducing SO2 emissions. Compared with limestone-based systems, it offers:Higher reaction efficiencyLess sludgeRecyclable by-products(5) Other ApplicationsFertilizer additive: Provides magnesium, an essential plant nutrientCeramic industry: Used as a raw material for MgO ceramicsPulp and paper: Acts as a buffering and neutralizing agentPaints and coatings: Enhances fire resistanceCosmetics and personal care: Used in deodorants and skincare products5. Advantages of Magnesium HydroxideHalogen-Free Flame Retardant: Safe, environmentally friendly substitute for brominated compoundsHigh Thermal Stability: Decomposes at high temperatures without releasing toxic gasesSmoke Suppression: Minimizes smoke generation during combustionEnvironmentally Safe: Non-toxic, non-corrosive, biodegradableMild Alkalinity: Provides controlled neutralization, reducing risks in wastewater treatmentMultifunctionality: One compound serves multiple roles across diverse industries 6. Available Grades and SpecificationsGradePurity (%)Particle Size (μm)ApplicationIndustrial Grade≥ 95.0D50 ≈ 5-20Flame retardant, FGD, water treatmentFine Grade≥ 98.0D50 ≈ 1-5Plastics, rubber, coatingsP-h-a-rmaceutical Grade≥ 99.5D50 < 2Antacid, laxativeNano Grade (Custom)≥ 99.9< 1 μmAdvanced materials, high-end coatings Custom grades are available upon request, including surface-treated and modified magnesium hydroxide for improved dispersion and compatibility with polymers.7. Packaging and StoragePackaging Options:25 kg PP/PE woven bags500 kg or 1000 kg jumbo bagsCustom packaging available on requestStorage Conditions:Store in a dry, well-ventilated areaKeep away from moisture and acidsAvoid direct sunlightShelf Life: 2 years under proper storage
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