Potassium Hydroxide
Also known as: E525
Potassium hydroxide is FDA GRAS-affirmed under 21 CFR 184.1631 for use as a pH control and processing agent at GMP levels. The strong base reacts during processing and is neutralized in the final food; residual levels are negligible.
What it is
Potassium hydroxide (KOH, CAS 1310-58-3) — a strongly basic inorganic compound (caustic potash).
PH control agent, formulation aid, processing aid (e.g., olive curing, cocoa Dutching).
What regulators actually say
"The ingredient is used as a formulation aid, a pH control agent, a processing aid, and a stabilizer and thickener... in food at levels not to exceed current good manufacturing practice."
Regulatory status
United States — FDA
GRAS — 21 CFR 184.1631 (formulation aid, pH control, processing aid, stabilizer/thickener) at GMP levels.
European Union — EFSA
Permitted as E525 under EU Regulation 1333/2008; quantum satis.
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