Magnesium Carbonate
MgCO₃ | CAS: 546-93-0 | HS: 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 Formula | MgCO₃ |
|---|---|
| Molecular Weight | 84.31 g/mol |
| CAS Number | 546-93-0 |
| HS Code | 28369900 |
| Appearance | White odorless powder or lumps; light grade: low-density fluffy precipitate |
| Available Grades | Technical 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
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