E261Preservative

Potassium acetate

What the research shows

Prototype

Not enough

published research on this page yet

How we decide

A potassium salt of acetic acid.

Written from English Wikipedia1

  • Vegan
  • Vegetarian
  • EU permitted

What research says

How it’s made and used

  • Fish shelf life2

    Potassium acetate, with potassium lactate, kept refrigerated catfish fillets fresh longer and tasting better to consumers.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Regulatory status

Checked Sep 2026

Status reflects the named register on the date checked. It is not a safety rating. A country appears here once we've found this ingredient on its official list.

How we check

Products

The 6 most-scanned of 371 products on Open Food Facts that list potassium acetate.

  • WHAT THE CLUCK Soy based chicken style chunks THE VEGETARIAN BUTCHER 3 additives
  • Plant-Based Bacon smoked La Vie · 120 g 3 additives
  • Supreme Prawn Cocktail Walkers · 25 g 8 additives
  • Vegan fried chicken The vegan butcher 3 additives
  • Happy Go Clucky The Vegetarian Butcher · 180 g 5 additives
  • PLANT-BASED HAM SMOKED LA VIE · 100 g 2 additives

References

  1. 1Potassium acetate. Wikipedia. Accessed September 26, 2026.
  2. 2Kin S, Schilling MW, Smith BS, et al. Potassium acetate and potassium lactate enhance the microbiological and physical properties of marinated catfish fillets. J Food Sci. 2011;76(4):S242-50. doi:10.1111/j.1750-3841.2011.02122.x