Potassium Phosphates (E340)

Type of additive
(Glossary)
Acidity Regulators, Emulsifiers, Humectants, Sequestrants, Stabilizers, Thickeners
E NumberE340
Chemical FormulaMonopotassium phosphate (E340i): KH2PO4
Dipotassium phosphate (E340ii): K2HPO4
Tripotassium phosphate (E340iii): K3PO4

Purpose and Function

Potassium Phosphates (E340) are used in the food industry as acidity regulators, stabilizers, emulsifiers, and sequestrants. They help maintain the pH balance, stabilize texture, and prevent ingredient separation in various products. Common applications include:

  • Beverages: Regulates acidity and acts as an electrolyte in sports drinks and energy drinks.
  • Dairy products: Stabilizes and thickens products like cream, cheese, and powdered milk.
  • Baked goods: Serves as a leavening agent in combination with baking powder to help the dough rise.
  • Processed meats: Retains moisture and improves the texture of products such as sausages and hams.
  • Nutritional supplements: Provides a source of potassium and phosphorus in dietary supplements and fortification.

Potassium Phosphates (E340) are derived from phosphoric acid and are valued for their functional properties in food processing and nutrition.


Potential Risks and Side Effects

Potassium Phosphates (E340) are generally considered safe for consumption when used within regulated limits, but there are some considerations:

High potassium intake: Individuals with kidney problems or those on potassium-restricted diets should be cautious with foods containing potassium phosphates, as excessive potassium can lead to hyperkalemia (high blood potassium levels).

  • Phosphate overload: Excessive consumption of phosphates, especially from processed foods, may affect bone health and kidney function.
  • Regulatory approval: Potassium Phosphates (E340) are approved for use in many countries, including the European Union and the United States, where they are considered safe for use in food products within established limits.

Overall, Potassium Phosphates (E340) are regarded as safe and effective food additives, though high intake should be monitored.