Food additive reference
Acidity regulators (E-numbers)
Acidity regulators control and stabilise pH. Citric acid, phosphates and carbonates are widely used.
77 additives in this category, grouped by regulatory level. Informational only — not medical or dietary advice; see the methodology.
- E170ICalcium carbonateUnder monitoring
- E260Acetic acidNo flags
- E261Potassium acetateNo flags
- E262Sodium acetatesNo flags
- E263Calcium acetateNo flags
- E264Ammonium acetateNo flags
- E270Lactic acidNo flags
- E290Carbon dioxideNo flags
- E296Malic acidNo flags
- E297Fumaric acidNo flags
- E325sodium lactateNo flags
- E326potassium lactateNo flags
- E327calcium lactateNo flags
- E328ammonium lactateNo flags
- E329Magnesium lactateNo flags
- E330Citric acidNo flags
- E331Sodium citratesNo flags
- E332Potassium citratesNo flags
- E332IMonopotassium citrateNo flags
- E332IITripotassium citrateNo flags
- E333Calcium citratesNo flags
- E333IMonocalcium citrateNo flags
- E333IIITricalcium citrateNo flags
- E334L(+)-tartaric acidUnder monitoring
- E335Sodium tartratesUnder monitoring
- E336Potassium tartratesUnder monitoring
- E337Potassium sodium tartrateUnder monitoring
- E338Phosphoric acidRestricted use
- E339Sodium phosphatesRestricted use
- E340Potassium phosphatesRestricted use
- E341Calcium phosphatesRestricted use
- E341IIITricalcium phosphateRestricted use
- E342Ammonium phosphateNo flags
- E343Magnesium phosphatesRestricted use
- E345Magnesium citrateNo flags
- E349ammonium malateNo flags
- E350Sodium malatesNo flags
- E351Potassium malateNo flags
- E352Calcium malatesNo flags
- E353Metatartaric acidNo flags
- E354Calcium tartrateUnder monitoring
- E355Adipic acidNo flags
- E356Sodium adipateNo flags
- E357Potassium adipateNo flags
- E359ammonium adipateNo flags
- E363Succinic acidNo flags
- E365Sodium fumarateNo flags
- E366Potassium fumarateNo flags
- E367Calcium fumarateNo flags
- E368ammonium fumarateNo flags
- E3701‚4-HeptonolactoneNo flags
- E380Triammonium citrateNo flags
- E500Sodium CarbonatesNo flags
- E501Potassium carbonatesNo flags
- E502CarbonatesNo flags
- E504Magnesium carbonatesNo flags
- E504IMagnesium carbonateNo flags
- E505Ferrous carbonateNo flags
- E507Hydrochloric acidNo flags
- E510Ammonium chlorideNo flags
- E513Sulphuric acidNo flags
- E514Sodium sulphatesNo flags
- E515Potassium sulphatesNo flags
- E517Ammonium sulphateNo flags
- E518Magnesium sulphateNo flags
- E524Sodium hydroxideNo flags
- E525Potassium hydroxideNo flags
- E526Calcium hydroxideNo flags
- E527Ammonium hydroxideNo flags
- E528Magnesium hydroxideNo flags
- E529Calcium oxideNo flags
- E530Magnesium oxideNo flags
- E540Dicalcium diphosphateNo flags
- E546Magnesium pyrophosphateNo flags
- E574Gluconic acidNo flags
- E575Glucono-delta-lactoneNo flags
- E578calcium gluconateNo flags
Questions about Acidity regulators
- What are Acidity regulators?
- Acidity regulators are a regulatory class of food additives. Their technological function is: control and stabilise food pH. In the EU, permitted uses are governed by Regulation (EC) No 1333/2008.
- Which E-numbers belong to Acidity regulators?
- Forkin tracks 77 additives in this category, including Calcium carbonate (E170I), Acetic acid (E260), Potassium acetate (E261), Sodium acetates (E262). This page lists their regulatory levels.
- Are Acidity regulators vegan?
- It depends on the individual additive and its source. The Forkin app shows product-specific vegan and vegetarian signals where available, based on ingredient and label data, rather than guessing from the category.
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