What is E337?
E337 is Sodium Potassium Tartrate — a mixed salt of tartaric acid, used as a antioxidant to help stop fats and oils turning rancid and protect food colour and flavour.
What is E337 (Sodium Potassium Tartrate)?
E337 is the E-number for sodium potassium tartrate, one of the antioxidants group of food additives (E300–E399). Additives in this group stop fats and oils turning rancid and protect food colour and flavour. A mixed salt of tartaric acid. Like every E-number, E337 has been evaluated and authorised for use in food in the European Union — the 'E' literally stands for Europe, and a number is only granted after a safety assessment. That authorisation doesn't mean every additive suits every diet or that all concerns are settled, which is why we break down the safety, vegan, vegetarian and halal status of E337 in detail below.
Where is E337 found?
E337 is typically used in oils, margarine, snacks, cured meats, soft drinks and processed foods. You'll find it listed in the ingredients either by its E-number (E337) or by its full name, sodium potassium tartrate. Common foods that may contain E337 include:
- Oils
- Margarine
- Snacks
- Cured meats
- Soft drinks and processed foods
Full guide: foods containing E337 and how to spot it on labels →
Is E337 safe?
E337 is considered safe. It is authorised across the EU, UK and US, and safety evaluations by the European Food Safety Authority (EFSA) have not identified health concerns at the levels used in food. For most people there is no reason to avoid E337.
EFSA status: Authorised in the EU — no safety concern at current levels of use
Source: European Food Safety Authority
Is E337 vegan?
E337 is vegan. A mixed salt of tartaric acid, with no animal involvement in standard production.
Full vegan status guide for E337 →Is E337 halal?
E337 is halal. A mixed salt of tartaric acid, with no haram source involved.
Full halal status guide for E337 →Frequently Asked Questions
What is E337 in food?
E337 is Sodium Potassium Tartrate — a mixed salt of tartaric acid, used as a antioxidant to help stop fats and oils turning rancid and protect food colour and flavour.
Is E337 safe to eat?
Yes. E337 is authorised in the EU, UK and US, and EFSA evaluations found no health concern at normal food levels.
Is E337 vegan?
E337 is vegan. A mixed salt of tartaric acid, with no animal involvement in standard production.
Is E337 halal?
E337 is halal. A mixed salt of tartaric acid, with no haram source involved.
Also check: is this ingredient safe for cats? · safe for dogs? · check the calorie content of foods containing this
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Additive data sourced from Open Food Facts (ODbL licence) and the European Food Safety Authority (EFSA).