Potassium acetate
Vinegar salt.
- Category
- Preservatives
- Vegan
- Yes
- Vegetarian
- Yes
What it is
Potassium acetate is the potassium salt of acetic acid — vinegar’s acid in salt form.
How it is used in food
Buffers acidity and suppresses spoilage bacteria while adding no flavour of its own.
Commonly found in- Cheese
- Baked goods
- Cured meats
- Beverages
Health and safety
None at food levels. Acetate is a routine metabolite your body produces and burns constantly. It contributes potassium, worth noting only for anyone on a potassium-restricted diet.
No safety concern identified; permitted at quantum satis.
Regulatory status
| Region | Status | Notes |
|---|---|---|
| Australia & New Zealand FSANZ |
Permitted | Permitted under the FSANZ Food Standards Code. |
| European Union EFSA / European Commission |
Permitted | Authorised for food use under EU regulations (Annex II). |
| United States FDA (Food and Drug Administration) |
Permitted | Authorised for food use by the FDA (often GRAS for standard additives). |
Identification on labels
- E-number
- E261
Worth knowing
It carries vinegar’s preserving action without vinegar’s taste or smell, which is why it appears in foods that should not taste sharp.
Conclusion
There is no reason to avoid potassium acetate in your food. Acetate is a routine compound your body processes and burns constantly, and EFSA permits this acidity buffer with no numerical limit. Unless you are on a strict potassium-restricted diet, it poses no safety concern in everyday meals.
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Open the appEntry last reviewed 2026-07-28.
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