What is E 173?
E 173 is the E number of Aluminium. Silver-coloured metal pigment. It is permitted only for the external decoration of certain sugar confectionery and baked goods.
What is E 173 used for?
E 173 belongs to the group "Colours" and is used as colour.
- Colour: Colours add or restore colour in a food.
Which foods may contain E 173?
According to the European Commission's database, E 173 may be used in 2 food categories and subcategories, each only in specific products and usually with maximum levels. The categories come from these areas:
- Confectionery
Is E 173 vegan?
Usually yes: the substance is normally made from plant, mineral or synthetic raw materials or with microorganisms. In individual cases, only the manufacturer or a vegan label can give certainty.
Is E 173 linked to genetic engineering?
No typical link to genetic engineering is known for this substance: it is not usually obtained from plants for which GM varieties exist, nor produced by fermentation.
How does E 173 appear on the label?
In the list of ingredients, the substance appears with its function, followed by the E number or the name, for example "Colour: E 173" or "Colour: Aluminium".
Sources
- Regulation (EC) No 1333/2008, consolidated version of 18.08.2026, Annexes I and II, EUR-Lex
- Food Additives Database, European Commission (accessed 19 October 2026)