Potassium Citrates E332
buffering agent, sequestrant — Primarily synthetic (from citric acid).
Tripotassium citrate (E332i), Monopotassium citrate (E332ii)
CAS: 866-84-2 (i), 3609-96-9 (ii)
Factual Regulatory Reference
This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and is subject to change. Always refer to your local regulatory authority for the most current information.
What Is Potassium Citrates?
Potassium citrates (monopotassium, dipotassium, and tripotassium citrate) are potassium salts of citric acid used as acidity regulators, sequestrants, and emulsifying salts. They function identically to sodium citrates but provide potassium — relevant for sodium-reduced formulations. JECFA considers them acceptable with no numerical ADI. EFSA confirmed safety in 2018. Potassium citrate is also used medically to treat kidney stones and urinary tract disorders, as it alkalinizes urine and increases urinary citrate excretion.
? Did You Know?
Beyond food, Potassium Citrates is also used in cosmetics, medicine, industrial applications, household products. Its versatility makes it one of the most multi-purpose chemical compounds in everyday life.
In the EU, Potassium Citrates has a "quantum satis" authorization — Latin for "as much as needed." This means there's no specific maximum limit; manufacturers use only what's technologically necessary.
Detailed Regulatory Assessment
European Union (EFSA)
Permitted in various food categories
Official EFSA LinkUnited States (FDA)
Regulated as a direct food additive under FDA CFR titles.
Japan (MHLW)
Compliant with Japanese food sanitation law.
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Natural Occurrence
This additive is not known to occur naturally in significant quantities.
Manufacturing
Produced by neutralizing citric acid with potassium hydroxide or potassium carbonate. The degree of neutralization determines whether monopotassium citrate (E332ii) or tripotassium citrate (E332i) is formed. Tripotassium citrate is the most commonly used form.
Applications Beyond Food
pH adjuster and buffering agent in personal care products.
Urinary alkalinizer for treating kidney stones, electrolyte replenisher, buffering agent.
Cleaning agents, water treatment, antifreeze formulations.
Descaling products, water softeners.