Vegan

E517 is classified as vegan by the local ingredient taxonomy.

Names you may see on a label

AmmoniumsulfatE 517AmmoniumsulfaatSulfato amónicoSulfato de amonioAmmonsulfat(NH4)2SO4Solfato di ammonioSolfato d'ammonioSolfato ammonicoSíran amonnýN2H8SO4Sulfate d'ammonium7783-20-2Sulfate d'ammoniaqueAmmoniumsulfaattiAmmoniumsulfaattiaAmmonium sulphateammonium sulfateSvovlsur ammoniakDiammoniumsulfatSvovlsurt ammoniakСульфат аммонияЕ517Аммоний сернокислыйАммония сульфатSiarczan amonuSiarczanVI amonuSulfato de amónioSulfato de amónia

How to verify it

Check that the name refers to this exact ingredient and not a similar additive with a different source.