Sodium Hydroxide
This is what the ingredient is.
Sodium hydroxide (lye or caustic soda) is a strong alkaline compound produced industrially. Highly corrosive in concentrated form.
Here is why it shows up on the label.
pH adjuster used in food processing for curing olives, processing cocoa, and peeling fruits/vegetables. Neutralized during processing - not present in final product in significant amounts.
Here is what food agencies say.
FDA GRAS as pH control agent. Used in processing but not present in final product. It is approved in the US, Europe (as E524), and Canada. for specific applications.
Here is what research has found.
Long history of use in food processing. When properly used, completely neutralized and not present in final product. Safety concerns only for handling concentrated form.
Here are a few things worth knowing.
Not present in significant amounts in final food products due to neutralization during processing. Concentrated form is highly corrosive (relevant for food workers, not consumers). Final products safe for consumption.
Sources
- FDA 21 CFR 184.1763
- JECFA Monograph
- Food Processing Guidelines
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.