Magnesium carbonate is a versatile white inorganic mineral compound used across rubber, plastics, fire-resistance, pharmaceuticals, food, cosmetics, and even sports. It occurs naturally as the mineral magnesite, and is also produced synthetically in basic (hydroxide-containing) form for applications requiring high purity and consistent specifications.
Three Distinct Commercial Forms
The three commercial forms — Light, Heavy and Basic (USP/FCC) — share the same essential chemistry but differ dramatically in physical properties such as bulk density, particle morphology and absorption characteristics, making each suited to a specific class of applications.
Light vs Heavy
Light Magnesium Carbonate is a fluffy, low-density powder with very high surface area — ideal for absorption-driven applications, rubber compounding (where high surface area is needed for vulcanisation), and antacid formulations. Heavy Magnesium Carbonate, by contrast, has greater bulk density and better compressibility, making it more economical to ship and easier to handle in industrial-scale rubber and fire-protection applications.
USP / FCC Pharma Grade
Our Basic (USP/FCC) grade meets United States Pharmacopeia and Food Chemicals Codex standards, with controlled heavy-metals (≤20 ppm), arsenic (≤3 ppm), and chloride/sulfate limits. It is used as a pharmaceutical tablet diluent, antacid active ingredient, food anti-caking agent, and as gymnastics/climbing chalk for moisture absorption on athletes' hands.
Light Magnesium Carbonate
Low bulk density, high surface area, excellent absorbent properties. Fluffy white powder used in rubber, cosmetics, antacids, and as an anti-caking agent.
- Bulk Density 0.08 – 0.20 g/cm³
- MgO Content 40 – 43.5%
- Mesh 200+
- Form Fluffy Powder
Heavy Magnesium Carbonate
Denser particles, coarser texture. Higher packing density makes it cost-efficient for transport. Used in rubber reinforcement, fire-resistance, and industrial applications.
- Bulk Density 0.25 – 0.45 g/cm³
- MgO Content 40 – 43.5%
- Compressibility Better
- Form Dense Powder
Basic Magnesium Carbonate (USP/FCC)
Pharmaceutical and food-grade quality meeting USP/NF and FCC specifications. Used as tablet diluent, antacid, anti-caking agent in food, and chalk for athletes.
- MgO 40.0 – 43.5%
- Heavy Metals ≤ 20 ppm
- Arsenic (As) ≤ 3 ppm
- Standard USP/NF · FCC
| Parameter | Light Grade | Heavy Grade | USP/FCC Grade |
|---|---|---|---|
| MgO Content | 40 – 43.5% | 40 – 43.5% | 40.0 – 43.5% |
| Bulk Density | 0.08 – 0.20 g/cm³ | 0.25 – 0.45 g/cm³ | 0.08 – 0.25 g/cm³ |
| Moisture / Loss on Drying | ≤ 10% | ≤ 10% | ≤ 10% |
| Chloride (Cl) | ≤ 0.1% | ≤ 0.1% | ≤ 0.02% |
| Sulfate (SO₄) | ≤ 0.5% | ≤ 0.5% | ≤ 0.05% |
| Heavy Metals | — | — | ≤ 20 ppm |
| Arsenic (As) | — | — | ≤ 3 ppm |
| Appearance | White powder, odourless | ||
| Standard | Technical | Technical | USP/NF · FCC |
| Packaging | 25 kg bags · 500 kg jumbo bags | ||
Pharmaceutical-grade product accompanied by USP/FCC compliance documentation. Heavy metal & microbiological testing available on request.
Packaging Options
- 25 kg PP woven bags Standard
- 500 kg jumbo bags Available
- Double-bagged Pharma grade
- Private labelling Available
Trade Terms
- FOB Dubai / Jebel Ali ✓
- CIF Destination ✓
- CFR Destination ✓
- EXW Dubai ✓
- L/C, T/T accepted ✓
Documentation
- Certificate of Analysis Every batch
- USP/FCC Compliance Pharma grade
- MSDS / SDS Available
- Certificate of Origin Provided
- Halal Certification On request