Aluminium sulphate

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Aluminii sulfas; CAS No 10043-01-3

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Aluminium sulphate is colourless to white in colour and forms crystals or crystalline powder. It is easily soluble in water and almost insoluble in 96% ethanol.

Field of application/use
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Food additive (E 520). The EU wants to reduce the intake of aluminium from food. For this reason, aluminium-containing additives, such as those found in bakery products, milk and cocoa products, have only been allowed to be present in EU foodstuffs to a limited extent since August - in fewer products than before and in smaller quantities.

Aluminium sulphates give greater strength to pieces of fruit and vegetables and consolidate coatings from other gelling agents. (1 mg/kg body weight, based on aluminium).

In 2014, there were major restrictions such as: from "egg white" to "liquid egg white only for egg white foams" and a reduction in the amount from 30 to 25 mg Al/kg. A further restriction was made from "candied, crystallised or glazed fruit and vegetables" to "candied cherries".


Last updated on: 29.10.2020