Other additives · Food additive

Potassium hydroxide (E525)

Updated October 2, 2026

Potassium hydroxide (E525) is a food additive in the “other additives” group. It appears in 340 products in our database, 12 of them sold in the US.

Quick facts

Also known as
E525
E-number
E525
Function
Other additives
Found in
340 products (12 sold in the US)

Foods that commonly contain Potassium hydroxide

Cocoa powders 3% · 33
From 6 months 6% · 22
Meat analogues 0% · 11
Dietary supplements 0% · 10
Vegetarian patties 1% · 10
Protein bars 0% · 9
Beverages 0% · 7
Cereals for babies 3% · 7

Share of published products in each category whose ingredient list includes Potassium hydroxide.

Popular products with Potassium hydroxide

4 Cherry Bakewell Tarts e NOVA 4
4 Cherry Bakewell Tarts
Tesco
421 kcal
17.9 Fat g
29.6 Sugar g
0.5 Salt g
per 100 g · 1.5 g protein
Vegetarian 2 allergens
Meal Replacement Shake Chocolate NOVA 4
Meal Replacement Shake Chocolate
ELEVATION · 11 fl. oz
55 kcal
1.5 Fat g
5.5 Sugar g
0.2 Salt g
per 100 ml · 3.1 g protein
Palm oil free 2 allergens
Tesco Free From Bramley Apple Pies 4 Pack d NOVA 4
Tesco Free From Bramley Apple Pies 4 Pack
Tesco
376 kcal
12.5 Fat g
27.9 Sugar g
0.2 Salt g
per 100 g · 1.7 g protein
3 allergens
OPTIMEAL Protein Shake Chocolate c NOVA 4
OPTIMEAL Protein Shake Chocolate
H-E-B · 11 oz
59 kcal
1.9 Fat g
5.9 Sugar g
0.2 Salt g
per 100 ml · 3.1 g protein
Palm oil free 2 allergens
Unicorn Cupcakes e NOVA 4
Unicorn Cupcakes
Tesco
502 kcal
28 Fat g
41.5 Sugar g
0.3 Salt g
per 100 g · 3.2 g protein
3 allergens
Protein Shake b NOVA 4
Protein Shake
Equate
49 kcal
0.9 Fat g
0.3 Sugar g
0.2 Salt g
per 100 ml · 9.2 g protein
1 allergen
Patty beef jamaican spicy NOVA 4
Patty beef jamaican spicy
Golden Krust
307 kcal
11.8 Fat g
3.9 Sugar g
1.3 Salt g
per 100 g · 9.5 g protein
3 allergens
Mentos NOVA 4
Mentos
Unknown brand
386 kcal
1.8 Fat g
71.7 Sugar g
0.2 Salt g
per 100 g · 0.1 g protein
1 allergen
b NOVA 4
High protein nutrition shake
Unknown brand
49 kcal
0.9 Fat g
0.3 Sugar g
0.2 Salt g
per 100 ml · 9.2 g protein
1 allergen
c NOVA 4
Home style soup
Unknown brand
88 kcal
5.7 Fat g
1.8 Sugar g
1 Salt g
per 100 g · 4 g protein
4 allergens

How to spot Potassium hydroxide on a label

Look for any of these names in the ingredient list:

Potassium hydroxideE525

Related additives

Silicon dioxide · E551Glycerol · E422Acacia gum · E414Gelatine · E428Malic acid · E296Ammonium carbonates · E503 All other additives

Frequently asked questions

What foods contain Potassium hydroxide?

In our database, Potassium hydroxide most often appears in cocoa powders, from 6 months, meat analogues and dietary supplements.

How many products contain Potassium hydroxide?

340 published products on Foodmetria list Potassium hydroxide, including 12 sold in the United States. Counts come from ingredient lists in Open Food Facts and update daily.

Product data: Open Food Facts (ODbL), updated daily. Additive information is for general education and is not medical advice. Always check the package label. Our methodology.