Aluminium sulphate (E520): What the Sources Found

Aluminium sulphate is the acidity regulator the food industry lists as E520. In our table it is moderate risk: it takes 15 of the 33 additive points off a product's score for a child.

In short

Moderate risk. 15 of the 33 additive points come off a product that carries it.
Flagged for young children. Set only where EFSA’s own exposure assessment shows toddlers or children exceeding or approaching the ADI, or where a regulator used explicitly child-specific language. For a child under 6 it moves one class up.
3 citations from EFSA, Law, each one below.

What Aluminium sulphate does to a score

A packaged food starts with 33 points for what is in its ingredient list. Aluminium sulphate takes 15 of the 33 additive points off a product's score, and a child under 6 sees it one class higher again. Scan the pack in Sito and the score you get is the one for your own child's age, with this additive named in the reasons. How we score has the whole method.

What the sources found

Every classification in our table comes from the citations below, and nothing else. They are quoted as the source wrote them.

EFSA Journal 2018;16(7):5372 — doi:10.2903/j.efsa.2018.5372
Aluminium sulphates E 520–523 of no safety concern at current EU authorised uses, which are niche; no genotoxicity or carcinogenicity concern; toddler/child P95 aluminium estimates up to 0.88 mg/kg bw/day judged highly uncertain.
Law Commission Regulation (EU) No 380/2012, EUR-Lex CELEX:32012R0380
Restricted aluminium-containing additives for consumer protection on the basis that EFSA's 1 mg Al/kg bw/week TWI 'is generally exceeded for high consumers, especially children'.
EFSA Journal 2008;6(7):754 — Safety of aluminium from dietary intake
TWI 1 mg Al/kg bw/week; exceeded by a significant part of the EU population, children in particular.

Why this class

IARC Group 2B; or an EFSA re-evaluation that flagged genotoxicity data gaps, found safety could not be assessed on the available data, or cut the ADI citing child exposure; or an EU harmonised classification of the substance as a reproductive or developmental hazard; or an EU withdrawal of one authorised food use while others remain; or an OEHHA/Proposition 65 listing; or membership of the Southampton-six colourants.

Our confidence in this row's classification is medium. Medium or low does not mean the evidence is weak; it means something about the row is still being pinned down, usually a regulatory status confirmed from one source rather than two.