Ingredient · E336(i)

Potassium Tartrate

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Source
Not animal-derived
Allergen
No
Role in food
Potassium tartrate is used as a leavening agent in baking, often in combination with …

What it is

Potassium tartrate is a salt of tartaric acid, a naturally occurring acid found in grapes and other fruits. It is often produced as a byproduct of winemaking. It is typically a white crystalline powder.

Why it's used

Potassium tartrate is used as a leavening agent in baking, often in combination with baking soda, to help baked goods rise. It can also be used to stabilize egg whites and prevent sugar crystallization. It is commonly found in cookies, cakes, and other baked goods.

Health notes

Potassium tartrate is generally recognized as safe (GRAS) by the FDA for use in food. It is a source of potassium, an essential mineral. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated potassium tartrate and established an acceptable daily intake. Evidence does not suggest adverse health effects at typical consumption levels.

Allergen info

Potassium tartrate is not derived from any of the 9 major allergens recognized by the FDA. It does not contain gluten.

Products containing Potassium Tartrate

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.