E Number: E203 | Molecular Formula: C₁₂H₁₄CaO₄ | Appearance: Fine white crystalline powder

Calcium Sorbate (E203) is the calcium salt of sorbic acid. It is an effective antimicrobial preservative that inhibits the growth of molds, yeasts, and certain bacteria, helping food manufacturers extend shelf life while maintaining product quality and safety.

We supply consistent, high-purity food-grade Calcium Sorbate suitable for industrial use in approved markets.

  • Effective inhibition of mold and yeast growth
  • Helps extend shelf life of a wide range of products
  • Low impact on taste and aroma when used at recommended levels
  • Good heat stability
  • Provides an additional source of calcium
  • Compatible with many food systems (especially slightly acidic products)
Calcium Sorbate E203 food grade preservative supplier for bulk orders
Calcium Sorbate E203 food grade powder preservative for food manufacturing
IndustryCommon Uses
Bakery & ConfectioneryBread, cakes, pastries, fillings, toppings
DairyCheese (surface treatment), processed cheese, yogurt
BeveragesFruit juices, soft drinks, concentrates
Sauces & DressingsMayonnaise, salad dressings, sauces
Fruits & PreservesJams, jellies, dried fruits, candied products
OtherMargarine, frozen foods, snack foods
ParameterSpecification
AppearanceFine white crystalline powder
Assay98.0 – 101.0% (on dried basis)
Loss on Drying≤ 1.0 – 3.0%
Lead (Pb)≤ 2 mg/kg
Arsenic (As)≤ 3 mg/kg
Heavy MetalsWithin food-grade limits
Acidity (as sorbic acid)≤ 1.0%
SolubilitySlightly soluble in water

Specifications are indicative and may vary according to production, grade and batch. Final specifications and CoA will be confirmed and provided prior to each order.


United States: Generally Recognized as Safe (GRAS) when used in accordance with good manufacturing practices.

Other markets: Approved in various countries outside the European Union (including certain markets in Asia, Oceania, and others).

European Union: Calcium Sorbate (E203) is no longer authorized as a food additive (removed from the Union list in 2018 due to insufficient genotoxicity data).

Is Calcium Sorbate still used as a food preservative?

Yes, in markets where it remains approved. It is no longer permitted in the EU.

What packaging options do you offer for Calcium Sorbate E203?

Standard packaging is 25 kg cartons or fiber drums. We also provide flexible options for larger volumes according to your requirements.

What is Calcium Sorbate E203 used for?

Calcium Sorbate has been used as a preservative where control of molds and yeasts is required. Its suitability depends on the specific food formulation, destination market and applicable regulations.

Is Calcium Sorbate effective against mold and yeast?

Calcium Sorbate belongs to the sorbate family, which is primarily associated with mold and yeast inhibition. Actual preservative performance depends on factors such as formulation, pH, water activity, processing conditions and storage.

At what pH are sorbate preservatives most effective?

Sorbate preservatives generally perform better in acidic food systems. Their effectiveness is influenced by formulation pH, so pH should be considered when selecting and evaluating a sorbate preservative.