E336(I) · Cream of Tartar
- WHO
- Safe
- FDA
- Safe
- EFSA
- Safe
- FSANZ
- Safe
- Japan
- Safe
- UK FSA
- Safe
- Health Canada
- Safe
What is E336(I)?
Potassium bitartrate, commonly known as cream of tartar, is a byproduct of winemaking derived from tartaric acid found in grapes. This white, odorless powder acts as an acid in leavening systems, often paired with sodium bicarbonate in baking powder to produce carbon dioxide. It also stabilizes whipped egg whites, helps prevent sugar syrups from crystallizing, and reduces discoloration in boiled vegetables.
Also appears on labels as: Cream of tartar, E336, E 336, E-336, E336(i), E 336(i), E-336(i), Potassium bitartrate, Potassium hydrogen tartrate, Monopotassium tartrate, Tartaric acid potassium salt, Potassium acid tartrate.
What the evidence says
- Generally recognized as safe at typical food levels.
- Very high intakes may affect individuals with kidney impairment due to potassium content.
Frequently asked questions
Is E336(I) safe?
Our overall verdict for E336(I) (Cream of Tartar) is “Safe”, based on the most cautious of the major regulators’ positions — FDA: safe; WHO: safe; EFSA: safe; FSANZ: safe; Japan: safe; UK FSA: safe; Health Canada: safe.
Is E336(I) vegan, halal or gluten-free?
According to our ingredient data for Cream of Tartar — vegan: yes, vegetarian: yes, halal: yes, kosher: yes, gluten-free: yes, dairy-free: yes. Manufacturing sources can vary between products; check the label if it matters to you.
What is E336(I) and why is it used?
Potassium bitartrate, commonly known as cream of tartar, is a byproduct of winemaking derived from tartaric acid found in grapes. This white, odorless powder acts as an acid in leavening systems, often paired with sodium bicarbonate in baking powder to produce carbon dioxide. It also stabilizes whipped egg whites, helps prevent sugar syrups from crystallizing, and reduces discoloration in boiled vegetables.
Does E336(I) contain allergens?
No known allergens are recorded for Cream of Tartar.
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This page summarises publicly available regulatory assessments and research. It is general information, not medical advice. Sources: EFSA, FDA, WHO and the studies linked above.