E552 — Calcium Silicate

Calcium silicate (E552) is an inorganic compound commonly used in the food industry as an anti-caking agent. It appears as a white, odorless powder and is produced by combining calcium oxide with silica. 

Danger Level: 0 — Safe

Purpose in Products

In the food industry, calcium silicate serves several functions:

  • Anti-Caking Agent: It prevents clumping in powdered foods, ensuring free-flowing products. 
  • Carrier: Calcium silicate is used as a carrier for flavors and nutrients in food products. 

Health Considerations

Calcium silicate is considered safe for consumption when used within established limits. The European Food Safety Authority (EFSA) has not specified an acceptable daily intake (ADI) for calcium silicate, indicating no safety concern at the reported uses and use levels. 

Impact on Children

Calcium silicate is safe for children when present in food products at the levels typically used in food processing.

Impact on Taste

Calcium silicate is tasteless and odorless, making it an ideal ingredient for various food products without altering their flavor profiles.

Compatibility with Other Additives

Calcium silicate is compatible with various other food additives, including sugars and other hydrocolloids. Its water-binding properties make it suitable for use in products requiring moisture retention.

Natural Occurrence

Calcium silicate is not naturally occurring in foods but is synthetically produced for use as a food additive.

Alternatives and Substitutes

For those seeking alternatives to E552, options include:

  • Silicon Dioxide (E551): Another anti-caking agent used in powdered foods.
  • Magnesium Silicate (E553a): Used as an anti-caking agent in various food products.

Regulation

Calcium silicate is approved for use as a food additive in many countries, including the European Union, where it is designated as E552. Regulatory bodies such as the European Food Safety Authority (EFSA) have evaluated its safety and concluded that it poses no health concerns when used within established limits. 

Conclusion

Calcium silicate (E552) is a versatile and safe food additive used primarily as an anti-caking agent and carrier. Its unique properties make it valuable in various food products, enhancing texture and stability. While generally safe, individuals with specific sensitivities should exercise caution.