Ingredient · E336

Potassium Acid Tartrate

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Source
Not animal-derived
Allergen
No
Role in food
It is commonly used as a leavening agent in baking, reacting with baking soda …

What it is

Potassium acid tartrate is a salt of tartaric acid, a naturally occurring acid found in fruits like grapes. It is typically produced as a byproduct of winemaking, purified from argol (tartar) that forms on the inside of wine barrels. It is a white crystalline powder.

Why it's used

It is commonly used as a leavening agent in baking, reacting with baking soda to produce carbon dioxide gas, which causes doughs and batters to rise. It also acts as an acidity regulator and stabilizer in various food products, including baked goods, candies, and beverages.

Health notes

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

Allergen info

Potassium acid tartrate is not derived from any of the nine FDA major allergens. It does not contain gluten.

Products containing Potassium Acid Tartrate

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Salt Substitute Reckitt Benckiser LLC Salt Substitute Seasoning Mixes, Salts, Marinades & Tenderizers 0kcal 0Protein 0Fat 0Carbs Tops Markets, LLC Tops, Cookies, Frosted Lemon, Frosted Lemon Cookies & Biscuits 400kcal 4Protein 14Fat 64Carbs JFC International Inc. Red Bean Baked Cake, Red Bean Cakes, Cupcakes, Snack Cakes 400kcal 9.2Protein 6.9Fat 73.8Carbs Tops Markets, LLC Tops, Cookies, Iced Molasses, Iced Molasses Cookies & Biscuits 400kcal 4Protein 12Fat 68Carbs JFC International Inc. Dorayaki Baked Red Bean Cake, Chestnut Cakes, Cupcakes, Snack Cakes 403kcal 8.1Protein 7.3Fat 74.2Carbs Fourstar Group USA Inc. Easter Cookie Kit Baking Decorations & Dessert Toppings 383kcal 6.4Protein 1.1Fat 87.2Carbs Fourstar Group USA Inc. Easter Cookie Kit Baking Decorations & Dessert Toppings 383kcal 6.4Protein 1.1Fat 87.2Carbs Meringue Powder Wilton Industries Inc. Meringue Powder Baking Decorations & Dessert Toppings 333kcal 16.7Protein 0Fat 66.7Carbs Jovial Foods, Inc. Sour Cherry Filled Organic Cookies Cookies & Biscuits High in added sugars — 22% DV per serving 394kcal 3.0Protein 12.1Fat 66.7Carbs Specialty Bakers, LLC Country Baker, Lemon Pie Cakes, Cupcakes, Snack Cakes High in saturated fat — 45% DV per serving 301kcal 2.6Protein 16.8Fat 36.3Carbs Coastal Cocktails Inc. Chocolate Dipped Holiday Cookies, Chocolate Cookies & Biscuits 464kcal 7.1Protein 17.9Fat 64.3Carbs Wismettac Asian Foods, Inc. Baked Wheat Cracker With Chocolate Crackers & Biscotti High in saturated fat — 23% DV per serving 557kcal 8.6Protein 34.3Fat 55.7Carbs
Baking Soda (25 products) Salt (25 products) Sugar (19 products) Leavening (17 products) Wheat Flour (13 products) Guar Gum (13 products) Corn Starch (11 products) Organic Cane Sugar (10 products) Organic Rice Flour (10 products) Organic Rice Syrup (9 products)

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.