Potassium Carbonates E501
raising agent, alkalizing agent, stabilizer — Primarily synthetic.
Potassium carbonate (E501i), Potassium hydrogen carbonate/bicarbonate (E501ii)
CAS: 584-08-7 (i), 298-14-6 (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.
? Did You Know?
Potassium Carbonates occurs naturally in Wood ash (potash) and Certain mineral deposits. Many people consume it daily without realizing it's also a listed food additive.
Beyond food, Potassium Carbonates 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 Carbonates 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 at levels necessary to achieve intended effect.
Official EFSA LinkUnited States (FDA)
Used as sodium-free alternative to sodium carbonates.
Japan (MHLW)
Commonly used in Japanese noodle production.
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Natural Occurrence
Historically obtained from wood ash, giving rise to the name 'potash.' Modern production is synthetic. Potassium carbonate was traditionally extracted by leaching wood ashes and evaporating the solution.
Manufacturing
E501i (potassium carbonate) is produced by the electrolysis of potassium chloride solution, or by reacting potassium hydroxide with carbon dioxide. E501ii (potassium bicarbonate) is made by passing CO2 through a potassium carbonate solution or by reacting potassium hydroxide with excess CO2.
Applications Beyond Food
pH adjuster in personal care products.
Antacid, urinary alkalinizer, electrolyte replenisher.
Glass manufacturing, soap production, fertilizers.
Fire extinguishers (potassium bicarbonate), wine making.