E 521 Aluminium sodium sulphate

What is E 521?

E 521 is the E number of Aluminium sodium sulphate. Aluminium salt with very restricted use, for example in candied fruit and egg white.

What is E 521 used for?

E 521 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 521?

According to the European Commission's database, E 521 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 521 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 521 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 521 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 521" or "Firming agent: Aluminium sodium sulphate".