Potassium sodium tartrate
Function: Sequestrant
E337 is the European food-additive number for Potassium sodium tartrate. Potassium sodium tartrate (E337) is a sequestrant used as a food additive.
Is E337 safe or restricted?
E337 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 E337 vegan or vegetarian?
Potassium sodium tartrate (E337) 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 E337?
E337 appears in 162 of the 4.6 million products in Forkin's catalogue — most often in gummy candy, chocolate candy and marshmallow.
- Gummy Candy18
- Chocolate Candy11
- Marshmallow7
- Flavored Yogurt6
- Chewing Gum5
- Pastry4
- Cakes4
- Pork (General)4
Often appears alongside
Additives most frequently found in the same ingredient lists as E337 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 E337
- What is E337?
- E337 is the E-number for Potassium sodium tartrate. Potassium sodium tartrate (E337) is a sequestrant used as a food additive.
- Which foods contain E337?
- E337 appears in 162 of the 4.6 million products in Forkin's catalogue — most often in gummy candy, chocolate candy and marshmallow. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E337 vegan or vegetarian?
- Potassium sodium tartrate (E337) 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 E337 safe, and is it banned anywhere?
- E337 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 E337 — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it. See how Forkin compares to other scanners or view pricing.