Description

Magnesium Carbonate Hydroxide Pentahydrate is a high-purity inorganic compound with the chemical formula 4MgCO₃·Mg(OH)₂·5H₂O. This material is valued for its role as a high-quality source of magnesium and carbonate ions in various industrial and specialty chemical processes. It is primarily sought by manufacturers in the pharmaceutical, personal care, and specialty chemical sectors for applications requiring consistent purity and reliable performance.

Application

• Pharmaceutical Excipient: Used as a binder, diluent, and flow aid in tablet formulations.
• Personal Care & Cosmetics: Acts as an absorbent, opacifying agent, and viscosity modifier in powders, creams, and deodorants.
• Food Additive (where compliant): Serves as an anti-caking agent, acidity regulator, and drying aid in food processing.
• Specialty Chemical Synthesis: A precursor for high-purity magnesium salts and catalysts.
• Rubber & Plastics Industry: Functions as a filler and reinforcing agent to improve material properties.
• Flame Retardant Additive: Used in polymer composites and coatings due to its endothermic decomposition.
• Environmental Applications: Employed in wastewater treatment for pH adjustment and heavy metal precipitation.
• Sports & Gymnastics: A key component of drying agents (e.g., gymnastic chalk) for moisture absorption and improved grip.

Basic Information

Product Name	Magnesium Carbonate Hydroxide Pentahydrate
CAS No.	56378-72-4
Molecular Formula	4MgCO₃·Mg(OH)₂·5H₂O
Molecular Weight	485.65 g/mol
Synonyms	Basic Magnesium Carbonate Pentahydrate; Magnesium Hydroxide Carbonate Hydrate; Hydromagnesite; 4MgCO3·Mg(OH)2·5H2O; Magnesium Carbonate Basic Pentahydrate; Light Magnesium Carbonate; Food Grade Magnesium Carbonate; Pharma Grade Magnesium Carbonate; CAS 56378-72-4
EINECS	Contact for details

Quality Control

Our Magnesium Carbonate Hydroxide Pentahydrate is manufactured under a strict quality management system. Production adheres to current Good Manufacturing Practices (cGMP) where applicable, and the material can be supplied to meet various pharmacopeial standards such as USP/NF, EP, or BP, as well as food-grade specifications like FCC. Every batch is supported by a comprehensive Certificate of Analysis (COA) documenting purity, identity, and key physical parameters, ensuring traceability and compliance for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture and carbon dioxide, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White, light powder
Identification (IR)	Conforms
Assay (as MgO)	40.0% - 44.0%
Loss on Drying	50.0% - 55.0%
Acid Insoluble Substances	≤ 0.05%
Chloride (Cl)	≤ 0.05%
Sulfate (SO₄)	≤ 0.05%
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Calcium (Ca)	≤ 0.5%
Iron (Fe)	≤ 0.02%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.