Magnesium carbonate hydroxide
[CAS# 39409-82-0]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Carbides and carbonates
• Name: Magnesium carbonate hydroxide
• Synonyms: Pentamagnesium tetracarbonate dihydroxide pentahydrate
• Molecular Formula: Mg₅.(CO₃)₄.(OH)₂.4(H₂O)
• Molecular Weight: 467.64
• CAS Registry Number: 39409-82-0
• EC Number: 609-673-0
• SMILES: C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].O.O.O.O.[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2]

Safety Data

• Hazard Symbols: GHS05;GHS07;GHS09 Danger
• Risk Statements: H302+H312-H315-H318-H411
• Safety Statements: P273-P280-P301+P312+P330-P302+P352+P312-P305+P351+P338+P310

Discovery and Applications

Discovery and Applications of Magnesium Carbonate Hydroxide

Magnesium carbonate hydroxide (MgCO3·Mg(OH)2·xH2O) was discovered during geological surveys exploring magnesium-rich deposits. Scientists synthesized the compound by combining magnesium carbonate and magnesium hydroxide, which led to the development of a refined industrial production method. This synthesis method allows for a steady and controlled supply, which increases its availability in a variety of applications. Magnesium carbonate hydroxide is typically found as a white powder or crystalline solid. It is slightly soluble in water, and its chemical structure has buffering and antacid properties, giving it a variety of uses in different environments.

Magnesium carbonate hydroxide neutralizes stomach acid, relieving indigestion and heartburn. It is an ingredient in over-the-counter antacids that work by reducing stomach acidity. Magnesium carbonate hydroxide acts as a mild laxative by drawing water into the intestines, aiding bowel movements and relieving constipation.

Magnesium carbonate hydroxide provides bulk and stability to tablets and capsules, aiding in the formulation and consistency of medications. Magnesium carbonate hydroxide is used in tablet coatings to enhance appearance and protect active ingredients, improving product stability.

Magnesium carbonate hydroxide is used in plastics and polymers, where it releases water and carbon dioxide when heated, diluting flammable gases and forming a protective layer that slows combustion. Magnesium carbonate hydroxide is used as a filler and reinforcement in rubber and plastics, enhancing mechanical properties and surface smoothness.

Magnesium carbonate hydroxide is used to adjust pH and remove impurities from water. Its alkalinity neutralizes acidic water and precipitates heavy metals. Magnesium carbonate hydroxide helps neutralize acidic soils in agriculture, improving soil health and nutrient availability for plants.

Magnesium carbonate hydroxide absorbs excess oil and moisture in cosmetics, making it suitable for face powders and deodorants. Magnesium carbonate hydroxide maintains pH balance in personal care products, ensuring product stability and skin compatibility.

Magnesium carbonate hydroxide effectively neutralizes acidity without causing significant irritation; provides multiple functions in different applications; is considered safe with minimal toxicity, suitable for pharmaceuticals and consumer

Magnesium carbonate hydroxide is safe when used properly. Overuse can lead to magnesium overdose, causing diarrhea or electrolyte imbalance. It is critical to follow recommended dosages and guidelines. In industrial settings, proper handling is recommended to avoid inhalation of dust.

References

2013. The Merck Index, An Encyclopedia of Chemicals, Drugs, and Biologicals, 15th Ed.
URL: https://www.rsc.org/merck-index