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Wageningen University

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E524 : Sodium hydroxide

Caustic soda

Prepared from natural salt.

Function & Characteristics:
Strong alkali used as acidity regulator. Also used to enhance the industrial peeling of fruits, to blacken olives and in the preparation of caramel.

Many products, including bakery products, cocoa products, coffee creamer, black olives

Acceptable daily intake (ADI):
None determined

Side effects:
None known.

Dietary restrictions:
None. E524 can be used by all religious groups, vegetarians and vegans.


European Masters Degree in Food Studies - an Educational Journey

Master in Food Safety Law is an initiative of Wageningen University, The Netherlands