Description

Magnesium Carbonate Hydrate is a versatile inorganic salt widely used across multiple industries for its functional properties. Its primary value lies in its role as an antacid, desiccant, and filler, offering excellent acid-neutralizing capacity and flow characteristics. Key industrial users include manufacturers in the pharmaceutical, food & beverage, personal care, and rubber/plastics sectors who require a reliable, high-quality mineral compound for their formulations.

Application

• Pharmaceuticals: Used as an antacid in tablet and powder formulations to relieve heartburn and indigestion. Also functions as a desiccant and a flow aid in tablet manufacturing.
• Food & Beverage (FCC Grade): Employed as an anti-caking agent, acidity regulator, and firming agent in powdered foods, table salt, and dietary supplements.
• Personal Care & Cosmetics: Serves as an absorbent and opacifying agent in body powders, face powders, and other cosmetic preparations.
• Rubber & Plastics: Acts as a filler and reinforcing agent to improve mechanical properties and reduce material costs in various elastomeric and plastic products.
• Sports & Athletics: Applied as magnesium carbonate (gymnastics chalk) to absorb moisture and improve grip for athletes in climbing, weightlifting, and gymnastics.
• Industrial Processes: Utilized as a flame retardant and smoke suppressant filler in cables, wires, and other polymeric materials.

Basic Information

Product Name	Magnesium Carbonate Hydrate
CAS No.	23389-33-5
Molecular Formula	xMgCO₃·yMg(OH)₂·zH₂O
Molecular Weight	Varies (hydrated form)
Synonyms	Magnesium Carbonate, Basic; Light Magnesium Carbonate; Hydromagnesite; Magnesite; Gymnastics Chalk; Magnesium Carbonate Hydroxide Hydrate; Food Additive E504; CAS 546-93-0 (anhydrous basis)
EINECS	Contact for details

Quality Control

We supply Magnesium Carbonate Hydrate in various grades, including Technical, Food (FCC), and Pharmaceutical (USP/EP) specifications. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White, light powder
Identification (IR)	Conforms
Assay (as MgO)	40.0% - 45.0%
Loss on Drying	Contact for details
Acid Insoluble Substances	≤ 0.05%
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Calcium (Ca)	≤ 0.5%

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