Acid or acidity regulator
E337 (sodium potassium tartrate): what it is, its sources, vegan or not
E337 is sodium potassium tartrate, an acidity regulator. E337 comes from grapes. Vegan and vegetarian profiles get Fits you.
By Bravoora teamUpdated Sources checked 4 sourcesHow we check
Fits you
for a vegan profile
E337=grapes
What is E337?
E337 (sodium potassium tartrate) is an acidity regulator, an additive that adds acidity or a sour taste to a food, or controls how acid it is.
What is E337 made from?
E337 comes from grapes. Made from the tartaric acid left over from winemaking.
- Grapes
Is E337 vegan?
Fits you. E337 comes from grapes. Nothing from an animal.
What the app says to each profile, and the reason it shows.
What other names does E337 have on a label?
On a label, E337 can also appear as “INS 337”, “Acidity regulator (337)”, “Acidity regulator (E337)”, “Sodium potassium tartrate” or “Rochelle salt”.
Any of these on a pack means E337. The checker reads them all.
What would change the answer for E337?
For E337, only the ingredient list itself: a code the camera cannot read gets Needs one more scan, and the app never guesses a code it cannot see.
Sources: EU, US and Codex additive rules
Where additives are listed and approved. Bravoora reads the source and the diet; it does not rate the hazard.
- EU Regulation 1333/2008 on food additives (the E-number list)
- EU Regulation 1169/2011, Annex II: the allergen sources a label must name
- US FDA: Food Additive Status List
- FAO/WHO Codex: General Standard for Food Additives (GSFA) online
Names and classes cross-checked with Open Food Facts (Open Database License).
Create a website profile with the things you avoid and the people you check for.
Build my profileSave and edit your profile on this website. App transfer is not available yet.