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Additive

Potassium tartrate (E336)

E336 is in the E300s, the range used for antioxidants and acidity regulators. Here’s what it goes by on a label, and what regulators and scientists have said about it.

Sources checked September 26, 2026

Names on a label

Labels outside Europe often print the number on its own, without the E.

What regulators and scientists say

An acceptable daily intake is, in EFSA’s words, “an estimate of the amount of a substance in food or drinking water that can be consumed daily over a lifetime without presenting an appreciable risk to health.”2

Sources

  1. EFSA. Re-evaluation of L(+)-tartaric acid (E 334), sodium tartrates (E 335), potassium tartrates (E 336), potassium sodium tartrate (E 337) and calcium tartrate (E 354) as food additives, 2020.
  2. European Food Safety Authority. Glossary: acceptable daily intake.

Records as held by Revely on September 26, 2026. Each links to its source.