What is E 285?
E 285 is the E number of Sodium tetraborate (borax). Preservative permitted in the EU only for sturgeon caviar.
What is E 285 used for?
E 285 belongs to the group "Other additives" and is used as preservative.
- Preservative: Preservatives prolong shelf life by protecting food against microorganisms.
Which foods may contain E 285?
According to the European Commission's database, E 285 may be used in 1 food categories and subcategories, each only in specific products and usually with maximum levels. The categories come from these areas:
- Fish and fisheries products
Is E 285 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 285 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 285 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 "Preservative: E 285" or "Preservative: Sodium tetraborate".
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)