Monopotassium tartrate
Function: Food Additive
E336I is the European food-additive number for Monopotassium tartrate. POTASSIUM BITARTRATE, also known as potassium hydrogen tartrate, with formula KC4H5O6, is a byproduct of winemaking.
Is E336I safe or restricted?
E336I is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as “Under monitoring” and does not make health claims. See the methodology for how regulatory levels are assigned, or the guide to how EU additives are approved, re-evaluated and banned.
Is E336I vegan or vegetarian?
Monopotassium tartrate (E336I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians.
The production source can vary between manufacturers — the Forkin app shows the verified vegan and vegetarian status per product. Always read the label for allergens.
Which foods contain E336I?
E336I appears in 618 of the 4.7 million products in Forkin's catalogue — most often in cakes, shortbread and chocolate candy.
- Cakes44
- Shortbread33
- Chocolate Candy29
- Baking Powder23
- Crackers22
- Cake Mixes19
- Baby Snacks / Puffs16
- Pizza15
Often appears alongside
Additives most frequently found in the same ingredient lists as E336I across the catalogue.
Counts reflect Forkin's independently enriched product catalogue and update as new products are added — they are not a market-share statistic.
Frequently asked questions about E336I
- What is E336I?
- E336I is the E-number for Monopotassium tartrate. POTASSIUM BITARTRATE, also known as potassium hydrogen tartrate, with formula KC4H5O6, is a byproduct of winemaking.
- Which foods contain E336I?
- E336I appears in 618 of the 4.7 million products in Forkin's catalogue — most often in cakes, shortbread and chocolate candy. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E336I vegan or vegetarian?
- Monopotassium tartrate (E336I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
- Is E336I safe, and is it banned anywhere?
- E336I is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as "Under monitoring" and does not make health claims — see the methodology page for how regulatory levels are assigned, and the Forkin app for the full profile, including acceptable daily intake (ADI) and restrictions by country.
See the full profile in Forkin
The Forkin app surfaces the full regulatory profile of E336I — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it. See view pricing.