E524 Sodium hydroxide: Halal or Haram?
Halal
A strong alkali used to adjust acidity and to treat pretzels and olives. E524 (Sodium hydroxide) is Halal. On German labels: Natriumhydroxid.
Why it is Halal
It is manufactured by passing electricity through salt water.
Where you meet it
Pretzels, olives, cocoa processing, peeled fruit.
What to do in the shop
Nothing special to do for E524 itself. Read the rest of the list: a product is only as clear as its least clear ingredient.
A status here describes the additive in general, and a specific product can be different. The same number can be made from plant or animal material depending on the manufacturer, and the label does not say which.
Questions people ask
Is E524 Halal?
Yes. E524 (Sodium hydroxide) is Halal: it raises no animal-source question. The rest of the ingredient list still decides the product.
What is E524 made from?
It is manufactured by passing electricity through salt water.
Related additives
- E509 Calcium chloride · Halal
- E500 Sodium carbonates · Halal
- E551 Silicon dioxide · Halal
Check a product, not just a number
An additive's status describes the additive in general. What matters is the whole ingredient list on the packet in your hand.
This is information, not a fatwa. These statuses combine published scholarly positions with ingredient analysis, and they can be incomplete or out of date. For anything that matters, confirm with the manufacturer and with a qualified authority.