Magnesium Hydroxide

Base Information

• Chemical Name: Magnesium Hydroxide
• CAS No.: 1309-42-8
• Deprecated CAS: 13760-51-5,1395893-88-5
• Molecular Formula: H2MgO2
• Molecular Weight: 56.3038
• Hs Code.: 2816.10
• European Community (EC) Number: 215-170-3
• UNII: NBZ3QY004S
• DSSTox Substance ID: DTXSID4049662
• Nikkaji Number: J43.883I
• Wikipedia: Magnesium hydroxide
• Wikidata: Q407548
• NCI Thesaurus Code: C29262
• RXCUI: 6581
• ChEMBL ID: CHEMBL1200718
• Mol file: 1309-42-8.mol

Synonyms:Brucite;Hydrate, Magnesium;Hydroxide, Magnesium;Magnesium Hydrate;Magnesium Hydroxide;Magnesium Hydroxide (Mg(OH)4)

Chemical Property of Magnesium Hydroxide

Chemical Property:

• Appearance/Colour: odourless white powder
• Melting Point: 350 °C(lit.)
• Boiling Point: 100oC at 760mmHg
• Flash Point: will not burn
• PSA: 40.46000
• Density: 2.36 g/cm³
• LogP: -0.35360
• Water Solubility.: 0.9 mg/100 mL (18℃)
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 57.9905210
• Heavy Atom Count: 3
• Complexity: 0

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi:Irritant
• Statements: R36/37/38:
• Safety Statements: S26:; S37/39:

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Metals, Inorganic Compounds
• Canonical SMILES: [OH-].[OH-].[Mg+2]
• Recent ClinicalTrials: RELISTOR's Effects on Opioid-Induced Constipation
• Recent EU Clinical Trials: Prevention of constipation during treatment with opioids: magnesiumoxide versus macrogol/elektrolytes
• Industrial Uses: Magnesium hydroxide (Mg(OH)2) is utilized in various industrial sectors such as food processing, paper production, heritage preservation, and as a flame-retardant material.
• Antimicrobial Potential: Mg(OH)2 is hailed as a cheap and biocompatible material with antimicrobial properties.
• Diverse Morphology and Applications: Mg(OH)2 exhibits diverse particle morphologies, such as needles, platelets, rods, spheres, flowers, and stars, making it suitable for various modern and advanced material applications, including flame-retardants, heavy metal precipitants, acidic waste neutralizers, antibacterial agents, cultural heritage protective agents, chemical sensors, and medicine production. It is also an important precursor for the synthesis of magnesium oxide (MgO).
• Coating Substance for Environmental Remediation: Its special features, including low cost, high surface area, non-magnetization, and low solubility constant, make it an excellent coating substance for enhancing the performance of nanoscale zero-valent iron (nZVI) in environmental remediation efforts.
• Synthesis Methods: Mg(OH)2 particles can be produced through various methods including precipitation, solvothermal and hydrothermal methods, microwave methods, electrochemical methods, sol-gel method, and hydration of MgO. The precipitation method is commonly used due to its low cost and simplicity. The properties and morphology of Mg(OH)2 materials depend on the type of precursor and precipitating agent used, as well as the synthesis process parameters.
• Petallike Morphology: Petal-like Mg(OH)2 materials have larger specific surface areas and higher decomposition temperatures, making them favorable for heavy-metal adsorption and flame retardancy. Significant attention has been given to synthesizing petal-like Mg(OH)2 materials.
• Carbonation and Cementitious Component: Mg(OH)2 can gain strength through carbonation, presenting potential for its use as a cementitious component. Its utilization as a cementitious binder can provide permanent CO2 sequestration within building components.

Technology Process of Magnesium Hydroxide

There total 3 articles about Magnesium Hydroxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

oxygen (80937-33-3) + magnesium (7439-95-4) → magnesium dioxide (1309-42-8)

Guidance literature:

With N₂; In neat (no solvent, gas phase); reaction over temp. range of 350-624 K in presence of N2 by static-flow reaction; detected by laser pulse / probe technique; Kinetics;

DOI:10.1021/j100126a020

Reference yield:

oxygen (80937-33-3) + magnesium (7439-95-4) → (MgO)2 + magnesium dioxide (1309-42-8)

Guidance literature:

In neat (no solvent); byproducts: MgO3; codeposition of pulsed laser evaporated Mg atoms with O2 in excess Ar on 10 K substrate; mechanism discussed; not isolated, detn. by IR;

DOI:10.1021/j100151a012

Reference yield:

magnesium (7439-95-4) + dinitrogen monoxide (10024-97-2) → (MgO)2 + magnesium dioxide (1309-42-8)

Guidance literature:

In neat (no solvent); byproducts: (OMgO)(N2), N2; codeposition of pulsed laser evaporated Mg atoms with N2O in excess Ar on 10 K substrate; mechanism discussed; not isolated, detn. by IR;

DOI:10.1021/j100151a012

upstream raw materials:

oxygen

magnesium

dinitrogen monoxide

Refernces

Conversion of magnesium fluoride to magnesium hydroxide

10.1016/S0892-6875(03)00002-5

The research investigates the conversion of magnesium fluoride to magnesium hydroxide as part of a process to remove magnesium from zinc sulphate electrolyte in electrolytic zinc plants. The study aims to improve the conversion process to reduce the residual fluoride content in the magnesium hydroxide product, which is essential for its marketability. Experiments showed that optimizing operating conditions such as reaction temperature, stirring velocity, and leach concentration could not reduce the residual fluoride content to below 1 wt%. X-ray diffraction analysis indicated that the residual fluoride was incorporated into the brucite crystal structure. However, it was possible to reduce the fluoride content by calcining the magnesium hydroxide to magnesium oxide at temperatures above 1273 K, resulting in a saleable product with less than 1 wt% fluoride. The study concludes that while complete conversion to pure magnesium hydroxide is not feasible, thermal decomposition to magnesium oxide is a viable alternative for producing a marketable product.