What E260 actually is
Acetic acid is what makes vinegar sour and what preserves pickles. It lowers pH enough to stop most spoilage bacteria, which is why pickling works at all. As an additive it is used where a manufacturer wants the acidity without the flavour and colour of a particular vinegar.
What it is made from
Two routes. Fermentation, where bacteria convert ethanol to acetic acid, which is how vinegar is made. And synthesis from petrochemical feedstock, which is cheaper and common for the pure additive.
Vegan, vegetarian, and halal status
Acetic acid is vegan, vegetarian, and kosher. On halal status: the fermentation route passes through ethanol as an intermediate, and the widely held scholarly position is that vinegar produced this way is permissible, because the ethanol is fully converted. Synthetic acetic acid raises no such question at all. Where the source matters to you, a certification mark settles it.
Is E260 safe?
Acetic acid is permitted with no numerical intake limit anywhere, which regulators reserve for substances of very low concern. It is a normal product of human metabolism and of gut bacteria. The only practical caution is its acidity: concentrated acetic acid is corrosive to handle, and habitual consumption of strongly acidic drinks contributes to dental enamel erosion. Neither is about the additive being unsafe in food.
- No established health concerns; a normal metabolic product with no intake limit set
- Acidic, so habitual consumption of strongly acidic drinks contributes to enamel erosion
- Concentrated acetic acid is corrosive to handle, which is a manufacturing rather than dietary matter
Where regulators stand
- EFSA (EU)
- Acceptable daily intake not specified, the category used for substances of very low concern.
- FDA (US)
- Generally recognized as safe.
Foods it turns up in
- Pickles and chutneys
- Sauces, ketchup, and dressings
- Bread and baked goods
- Tinned vegetables
- Crisps and savoury snacks
Names it hides behind
- E260
- Acetic acid
- Ethanoic acid
- Acidity regulator (E260)
- E261 to E263 are the acetate salts
Common questions
- Is E260 just vinegar?
- It is the acid that makes vinegar sour. Vinegar is a dilute solution of it plus flavour compounds; E260 as an additive is the acid on its own.
- Is acetic acid halal?
- Yes. Synthetic acetic acid raises no question, and vinegar made by fermentation is widely held to be permissible because the ethanol intermediate is fully converted.
- Is acetic acid vegan?
- Yes, by both the fermentation and synthetic routes. Note that some specialty vinegars are clarified with animal-derived finings, which is separate from the acid itself.
- Is acetic acid bad for teeth?
- Habitual consumption of strongly acidic drinks contributes to enamel erosion. That is about the acidity of the drink rather than the additive being harmful.
- Why use E260 instead of vinegar?
- It gives precise acidity without the colour and flavour a particular vinegar would bring, which matters when the recipe does not want to taste of vinegar.
Checking a real pack
This page answers the code. The pack in your hand is what decides, because the same code can come from different sources depending on the manufacturer. LabelWise, formerly SafeChoice, scans the label and explains what is in front of you.
LabelWise content is educational and describes how additives are made, regulated, and labelled. It is not medical, dietary, or religious advice. For certification questions, the mark on the pack and the certifying body are the authority.