1. What is food grade calcium carbonate (E170)?

Food grade calcium carbonate (E170) is a high-purity mineral ingredient used as a calcium fortifier, anti-caking agent, stabilizer, and whitening agent in food products. It is safe for human consumption when it meets standards like Codex and FSSAI.

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2. Is calcium carbonate safe for human consumption?

Yes. Calcium carbonate is widely recognized as safe when it meets food or pharma grade specifications, including limits on heavy metals and microbiological contamination.

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3. What are the key specifications of calcium carbonate for food and pharma?

Important parameters include:

• Purity (>98% CaCO₃)
• Low heavy metals (Lead, Arsenic, Cadmium)
• Controlled particle size (micron range)
• Consistent bulk density
• Microbiological safety

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4. What is the ideal particle size of calcium carbonate?

It depends on application:

• Food: typically 5–20 microns
• Tablets: 5–15 microns
• Softgels: below 10 microns

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5. Why is particle size distribution (PSD) important?

PSD affects:

• Mixing
• Flow
• Texture
• Final product performance

Uniform PSD ensures consistent quality and processing efficiency.

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6. What is the difference between GCC and PCC?

• GCC (Ground Calcium Carbonate): Natural, mechanically processed
• PCC (Precipitated Calcium Carbonate): Synthetic, chemically processed

Choice depends on application and performance requirements.

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7. Can calcium carbonate replace titanium dioxide (TiO₂) in food?

Yes. Calcium carbonate can act as a safe whitening alternative in many applications, especially where regulatory restrictions apply.

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8. Why does calcium carbonate sometimes cause a chalky taste?

This usually happens due to:

• Poor particle size control
• Low-quality material
• Improper dispersion

High-quality grades minimize this issue.

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9. Why do noodles or food products stick after adding calcium carbonate?

Common reasons include:

• Incorrect particle size
• Improper dosage
• Poor mixing

Using optimized grades helps prevent this.

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10. What is bulk density and why does it matter?

Bulk density affects:

• Flowability
• Packing
• Mixing behavior

Consistent density ensures uniform formulation performance.

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11. What are heavy metals in calcium carbonate and why are they important?

Heavy metals like lead, arsenic, and cadmium must be within strict limits to ensure:

• Safety
• Regulatory compliance
• Export acceptance

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12. What certifications should a calcium carbonate supplier have?

Look for:

• FSSAI
• HACCP
• GMP
• ISO standards
• Codex alignment

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13. What documents should a supplier provide?

• COA (Certificate of Analysis)
• MSDS/SDS
• TDS
• Export documentation

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14. What is the role of calcium carbonate in tablets?

It acts as:

• Calcium source
• Filler/diluent
• Structural support

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15. Is calcium carbonate suitable for softgel capsules?

Yes, if it has:

• Fine particle size
• Good dispersion properties
• High purity

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16. How do I choose the right calcium carbonate supplier?

Evaluate based on:

• Quality consistency
• Technical capability
• Customization options
• Regulatory compliance

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17. Can calcium carbonate be customized?

Yes. Advanced suppliers offer:

• Tailored particle size
• Adjusted bulk density
• Application-specific grades

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18. What are common problems in using calcium carbonate?

• Poor dispersion
• Taste issues
• Inconsistent quality
• Processing difficulties

These can be solved with the right grade selection.

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19. What industries use calcium carbonate?

• Food & beverages
• Nutraceuticals
• Pharmaceuticals
• Cosmetics & oral care

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20. Why is consistency important in calcium carbonate supply?

Inconsistent quality leads to:

• Batch rejection
• Production issues
• Product variability

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21. How does calcium carbonate affect product performance?

It impacts:

• Texture
• Stability
• Appearance
• Nutritional value

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22. Is calcium carbonate suitable for export-oriented products?

Yes, if it meets global standards and documentation requirements.

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23. What is the difference between food grade and industrial calcium carbonate?

• Food grade: high purity, safe for ingestion
• Industrial grade: used in paints, plastics, etc.

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24. How can formulation issues with calcium carbonate be solved?

By optimizing:

• Particle size
• Dosage
• Mixing process
• Supplier selection

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25. Why choose a premium calcium carbonate like CALPURE™?

CALPURE™ is designed for:

• High purity
• Low heavy metals
• Consistent quality
• Application-specific performance

It helps reduce formulation risk and improve product reliability.

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Final Note

Selecting the right calcium carbonate is not just a procurement decision—it directly affects product quality, safety, and brand reputation.

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Have Pure. Be Sure.