ScanWise
E172 · Colours

Iron oxides

No known risk

Mineral pigments (rust tones).

Category
Colours
Vegan
Yes
Vegetarian
Yes

What it is

A natural pigment used to add vibrant color to foods and beverages.

How it is used in food

Provides beautiful reds, oranges, and purples to foods without the health concerns associated with synthetic artificial dyes.

Commonly found in
  • Fruit juices
  • Dairy desserts
  • Snacks
  • Confectionery

Health and safety

Considered very safe. These are naturally occurring pigments found in everyday fruits and vegetables.

Evaluated by EFSA and confirmed safe for use in food at authorized levels.

Regulatory status

RegionStatusNotes
Australia & New Zealand
FSANZ
Permitted Permitted under the FSANZ Food Standards Code.
European Union
EFSA / European Commission
Permitted Authorised for food use under EU regulations (Annex II).
United States
FDA (Food and Drug Administration)
Permitted Authorised for food use by the FDA (often GRAS for standard additives).

Identification on labels

E-number
E172

Worth knowing

Anthocyanins (E163) change color depending on acidity: they are red in acidic liquids (like lemonade) and turn blue or purple in alkaline foods.

Conclusion

There is no reason to worry about iron oxides when checking a product label. These mineral pigments provide stable rust-toned colours to confectionery and snacks without health risks. Evaluated and confirmed safe by EFSA at authorized food levels, they pose no concern for everyday consumers.

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Entry last reviewed 2026-07-28.

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