YenzoWhat is E552 (calcium silicate)?
E552 is calcium silicate. In Appendix 1 of Circular 24/2019/TT-BYT the functions listed for it are anticaking agent.
E552Calcium silicate
E552 is calcium silicate (calci silicat). In Appendix 1 of Circular 24/2019/TT-BYT its function is anticaking agent.
Did you know? According to the JECFA (2015) definition quoted by EFSA, calcium silicate is prepared by various reactions between siliceous material (e.g. diatomaceous earth) and calcium compounds (e.g. lime, calcium hydroxide).
- Code
- E552 · INS 552
- Group
- Anticaking agent
In Vietnam✓ PermittedOn the list of permitted additives — Circular 24/2019, Appendix 1
Risk level on the Yenzo Scalelow?Based on the Open Food Facts additives taxonomy
How E552 appears on labels
IngredientsIllustrative example
Wheat flour, vegetable oil, salt, sugar, anticaking agent (552), dried onion and garlic, pepper, natural colour (160a).
anticaking agent (552)anticaking agent 552E552INS 552On Vietnamese labels: Calci silicat
Calcium silicate in food
Dried whey and whey products
Powdered sugar, powdered dextrose
Salt
Salt substitutes
Questions about calcium silicate
Is calcium silicate harmful?
In 2018 EFSA concluded that the safety of calcium silicate (E552), magnesium silicate (E553a), magnesium trisilicate and talc (E553b) as food additives cannot be assessed, because reliable data from long-term studies and reproduction studies are lacking. EFSA considered the group ADI set by the SCF in 1991 obsolete. In the food supplement scenario, intake for all population groups was below the maximum daily dose of magnesium trisilicate used as an antacid (4 g/person).
Is INS 552 permitted in Vietnam?
Yes. Calcium silicate (INS 552) is listed in Appendix 1 of Circular 24/2019/TT-BYT, the list of additives permitted in food, with the function anticaking agent.
Can children and pregnant women have E552?
In the EU, silicates E552–E553 are authorised in food category 0 of Regulation (EC) No 1333/2008. According to EFSA (2018), this means they are “permitted in all categories of foods excluding foods for infants and young children, except where specifically provided for”. This source has no separate rule for pregnant women. If you have a particular health condition, ask a doctor.
Other anticaking agents
E551Silicon dioxidelowE553Magnesium silicates or talc (type not printed)lowE553aMagnesium silicateslowE553bTalclowE554Sodium aluminium silicatemoderateE555Potassium aluminium silicatehigh
See all anticaking agents →Updated 21 October 2026
Sources (3)
- Open Food Facts additives taxonomy (Yenzo's table cites no EFSA opinion for this code). Open Food Facts additives taxonomy, https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives.txt (entry en:e552)
- Thông tư 24/2019/TT-BYT (văn bản hợp nhất 09/VBHN-BYT), Phụ lục 2A: mức sử dụng tối đa phụ gia trong thực phẩm
- EFSA Journal (2018). Re-evaluation of calcium silicate (E 552), magnesium silicate (E 553a(i)), magnesium trisilicate (E 553a(ii)) and talc (E 553b) as food additives