Sodium Hydroxide
Also known as: E524, Caustic soda
Sodium hydroxide (E524) is recognized by the FDA as Generally Recognized as Safe (GRAS) for food use under 21 CFR. It is rapidly neutralized in food matrices and contributes minimally to sodium intake.
What it is
Sodium hydroxide (lye/caustic soda), a strong inorganic base used in food processing.
PH regulator, peeling agent for fruits and vegetables, used in chocolate/cocoa processing and pretzel/bagel manufacturing.
Why it's flagged
- caustic in raw form (handling hazard, not consumer concern)
What regulators actually say
"Sodium hydroxide (NaOH, CAS Reg. No. 1310-73-2)... The ingredient is used as a direct human food ingredient... is generally recognized as safe when used in accordance with good manufacturing practice."
Regulatory status
United States — FDA
GRAS per 21 CFR 184.1763.
European Union — EFSA
Authorised acidity regulator (E524) at quantum satis.
Scan it before you buy it
Get Ube on iOS or Android — point at any barcode, see what's actually in there.
Get the app