Description

Pentamagnesium Dihydroxide Carbonate Tetrahydrate is a high-purity inorganic magnesium compound with a specific layered hydroxide-carbonate structure. This material is valued for its role as a high-performance flame retardant and smoke suppressant filler in polymer composites, particularly for wire and cable applications. It is also a key precursor for synthesizing advanced magnesium-based materials. Industries such as specialty plastics manufacturing, construction materials, and fine chemical synthesis rely on its consistent quality and performance.

Application

• Flame Retardant & Smoke Suppressant: Primary filler in halogen-free flame retardant (HFFR) compounds for polyolefin cables, wires, and engineering plastics.
• Polymer Additive: Used to improve the thermal stability and fire resistance of PVC, polyethylene, and EVA-based formulations.
• Precursor Material: Serves as a starting material for the synthesis of high-purity magnesium oxide (MgO) and other functional magnesium compounds.
• Acid Scavenger/Stabilizer: Functions as a neutralizing agent and stabilizer in various chemical processes and polymer systems.
• Specialty Ceramics & Glass: Used in the production of specialty glasses and ceramic materials requiring a magnesium source.
• Environmental Remediation: Potential application in wastewater treatment for phosphate removal and pH adjustment.

Basic Information

Item	Details
Product Name	Pentamagnesium Dihydroxide Carbonate Tetrahydrate
CAS No.	39409-82-0
Molecular Formula	Mg5(OH)2(CO3)4·4H2O
Molecular Weight	485.65 g/mol
Synonyms	Magnesium Hydroxide Carbonate Hydrate; Basic Magnesium Carbonate; Hydromagnesite; Magnesium Carbonate Hydroxide Hydrate; Magnesium Hydroxy Carbonate; Flame Retardant MDH; 4MgCO3·Mg(OH)2·4H2O; Magnesium Carbonate Basic Tetrahydrate
EINECS	Contact for details

Quality Control

Our Pentamagnesium Dihydroxide Carbonate Tetrahydrate is manufactured under a stringent quality management system. Each batch is tested to ensure it meets precise specifications for chemical composition, purity, and physical properties relevant to its application as a flame retardant and chemical precursor. A comprehensive Certificate of Analysis (COA) documenting parameters such as assay, moisture content, and particle size distribution is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture and carbon dioxide, which can affect product quality.

Specification

Item	Specification
Appearance	White fine powder
Identification (IR)	Conforms
Assay (as MgO)	40.0 - 44.0 %
Loss on Drying (LOD)	34.0 - 38.0 %
Acid Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.05 %
Sulfate (SO4)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (D50)	2.0 - 8.0 µm
Specific Surface Area (BET)	10 - 30 m²/g

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