E 522 Aluminium potassium sulphate

What is E 522?

E 522 is the E number of Aluminium potassium sulphate. Aluminium salt also known as alum, with very restricted use, for example in candied fruit and egg white.

What is E 522 used for?

E 522 belongs to the group "Other additives" and is used as firming agent.

• Firming agent: Firming agents keep fruit or vegetables firm and crisp.

Which foods may contain E 522?

According to the European Commission's database, E 522 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:

• Confectionery

Is E 522 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 522 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 522 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 "Firming agent: E 522" or "Firming agent: Aluminium potassium sulphate".