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Is Silicon dioxide, silicates, talc and ferrocyanide anti-caking salts Halal?

Yes — this one is Halal.

Halal

High confidence About this ruling

About this ruling

Evidence confidence
High means this page cites a primary regulator listing and a named Halal certifier listing, retrieved 16 August 2026. That describes the quality of the sources on this page—not a Halal certificate for the pack or outlet in your hand.
How we score High, Medium, and Low

Silicon dioxide, silicates, talc, sodium aluminium phosphate, and ferrocyanide anti-caking agents are inorganic.

Evidence at a glance

Named sources used for this page. Open the full Sources block for notes and citation numbers.

Source Type Retrieved
EFSA — Re-evaluation of silicon dioxide (E551) European Food Safety Authority Regulatory / labelling
SANHA — E551 (Silicon dioxide) SANHA Certifier / jurisdiction
Regulation (EC) No 1333/2008 on food additives European Union Regulatory / labelling
European Commission — Food additives European Commission Regulatory / labelling
Codex GSFA online FAO / WHO Codex Regulatory / labelling
SANHA — E-numbers SANHA Certifier / jurisdiction
U.S. FDA — Food additives U.S. Food and Drug Administration Regulatory / labelling

Full Sources

Additive identity

E-number
E520, E521, E522, E523, E535, E536, E538, E541, E551, E552, E553a, E553b, E554, E555
Codex INS
INS 520, INS 521, INS 522, INS 523, INS 535, INS 536, INS 538, INS 541, INS 551, INS 552, INS 553a, INS 553b, INS 554, INS 555
Function
anti caking agent
Family
anti caking
EU Union list
authorised
Names
Aluminium sulphate; Aluminium sodium sulphate; Aluminium potassium sulphate; Aluminium ammonium sulphate; Sodium ferrocyanide; Potassium ferrocyanide; Calcium ferrocyanide; Sodium aluminium phosphate; Silicon dioxide; Calcium silicate; Magnesium silicate; Talc; Sodium aluminium silicate; Potassium aluminium silicate

Possible source pathways

The finished molecule can be identical across feedstocks. The Halal ruling follows the pathway, not the code alone.

  • mineral · Typical Halal Mineral or inorganic identity. Not meat, wine, or insect colour.

E-number database

White anti-caking powder

Why this ruling

Silicon dioxide, silicates, talc, ferrocyanides, and sodium aluminium phosphate in this set are Halal mineral anti-caking agents.[3][5]

They are not bone phosphate.

Where you'll find it

  • Salt, spices, and icing sugar
  • Supplement powders

How to verify

1) Match E551–E555, E535–E538, E541, silica, or talc. 2) Halal. 3) E542 bone phosphate is a different page.

  • Silica/talc → Halal.
  • Not bone phosphate.
  • Keeps powders free-flowing.

Conditions for Halal

  • These anti-caking codes → Halal mineral
  • E542 bone phosphate is not this family

Scholarly differences

Food talc is a mineral silicate, not an animal glaze. Bone phosphate is the animal anti-caking cousin.

Frequently asked questions

Is silica in protein powder Halal?
Yes. E551 is mineral silicon dioxide.
Is food talc the same as baby powder scandals?
Food-grade E553b is specified talc. That is identity, not a cosmetics lawsuit.

Sources

Named Islamic, certifier, manufacturer, and regulatory sources used on this page. Inline markers like [1] jump here. Retrieval dates show when we last checked the live URL. Editorial methodology.

Certifier / jurisdiction

  1. SANHA — E551 (Silicon dioxide)

    SANHA

    Certifier: SANHA

    Named SANHA E-number entry (ingredient-class; not a product certificate).

    Retrieved:

  2. SANHA — E-numbers

    SANHA

    Certifier: SANHA

    Certifier E-number literacy; not a product certificate.

    Retrieved:

Regulatory / labelling

  1. EFSA — Re-evaluation of silicon dioxide (E551)

    European Food Safety Authority

    Substance identity—not a Halal certificate for a finished pack.

    Retrieved:

  2. Regulation (EC) No 1333/2008 on food additives

    European Union

    Union-list identity—not a Halal certificate.

    Retrieved:

  3. European Commission — Food additives

    European Commission

    EU additive literacy hub.

    Retrieved:

  4. Codex GSFA online

    FAO / WHO Codex

    Codex INS / GSFA identity.

    Retrieved:

  5. U.S. FDA — Food additives

    U.S. Food and Drug Administration

    US identity / labelling context—not a Halal ruling.

    Retrieved:

Browse this topic

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Applies to
General ruling; confirm local labels, slaughter, and certification when relevant
Last reviewed