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Magnesium Carbonate

MgCO₃  |  CAS: 546-93-0  |  HS: 28369900

Magnesium Carbonate

CAS: 546-93-0 | HS Code: 28369900

Magnesium Carbonate is a versatile inorganic mineral chemical with a broad cross-sector application profile. In pharmaceuticals, both the light and heavy grades are used as antacid active ingredients, tablet excipients, and laxative formulations — supplied by Mitchem to USP/EP pharmacopeial standards with full CoA and regulatory documentation. As food additive E504, it functions as an anti-caking agent in table salt, dried vegetables, and powdered foods, and as an acidity regulator. In rubber compounding, MgCO₃ is used as a mild activator and processing aid in neoprene and specialty rubber formulations. The light (precipitated) grade is the preferred chalk for gymnastics, rock climbing, and weightlifting due to its high surface area and moisture-absorbing properties. Mitchem supplies both light (precipitated) and heavy (basic) commercial grades, and pharma/food grades on request, with export-ready documentation across EU, US, and Asia Pacific markets.
Molecular FormulaMgCO₃
Molecular Weight84.31 g/mol
CAS Number546-93-0
HS Code28369900
AppearanceWhite odorless powder or lumps; light grade: low-density fluffy precipitate
Available GradesTechnical Grade: ≥95%  /  Pharmaceutical Grade: USP/EP ≥98%  /  Food Grade: FCC ≥98%  /  Heavy Basic Grade: 40–45% MgO  /  Light Precipitated Grade: ≥98% (low bulk density)

Packaging Options

  • 25 kg multi-layer kraft bags
  • 50 kg bags
  • 200 kg fibre drums
  • 1 MT jumbo bags

Applications by Industry

Pharmaceuticals (Antacid & Laxative API)Food Additive E504 (Anti-Caking)Rubber Processing AidGymnastics & Sports ChalkCosmetics & Personal CareFireproofing & InsulationFlooring & Magnesia CementsIndustrial Chemical Synthesis

Need a Certificate of Analysis, MSDS/SDS, or sample?
Fill the quote form or email us at info@mitchemindustries.com. Full documentation available for all grades and shipment sizes.

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