Sorbates (Preservatives)

Potassium Sorbate is the potassium salt of sorbic acid and is widely used as a preservative because of its ability to inhibit the growth of many yeasts and moulds. Chemically, it is an unsaturated organic salt and is commonly supplied as a white crystalline powder or granulated solid.

Its preservative function is closely related to sorbic acid. In aqueous systems, an equilibrium exists between potassium sorbate and sorbic acid, and antimicrobial effectiveness is influenced by the pH of the formulation. This makes application conditions important when selecting dosage and product grade.

For B2B procurement, Potassium Sorbate is not simply purchased as a generic chemical. Buyers normally specify the intended application, required grade, purity, packaging format, documentation, and delivery requirements. Food manufacturers may require Food Grade Potassium Sorbate compliant with applicable food-additive specifications, while cosmetic or industrial applications can have different regulatory and technical requirements.

Potassium Sorbate Chemical Formula and CAS Number

The chemical formula of Potassium Sorbate is C6H7KO2. Its commonly referenced CAS number is 24634-61-5, while its EC number is 246-376-1. ECHA identifies the substance as potassium (2E,4E)-hexa-2,4-dienoate.

These identifiers are particularly important in B2B purchasing because they provide an unambiguous way to identify the substance across technical specifications, safety documentation, regulatory databases, customs documentation, and supplier records.

When requesting a quotation, buyers should provide the chemical name and CAS number together with the required grade. This helps prevent confusion between potassium sorbate, sorbic acid, and other sorbate salts. The specification should also clearly state whether the material is intended for food, pharmaceutical, cosmetic, or another application.

Potassium Sorbate E202: What Does E202 Mean?

E202 is the European food additive number assigned to Potassium Sorbate. The designation indicates that the substance is recognised within the EU regulatory framework for food additives and, where authorised, can be used under the applicable conditions of use.

Potassium Sorbate is regulated within the European Union’s food-additive framework established by Regulation (EC) No 1333/2008. The regulation sets out authorised food additives, applicable food categories, conditions of use, and related requirements.

Therefore, E202 is not a different chemical from Potassium Sorbate. Potassium Sorbate and E202 refer to the same food additive when the substance is supplied for this regulated food-additive use. Buyers searching for “Sorbate E202” are generally looking for the food-grade form of potassium sorbate.

Potassium Sorbate Properties and Characteristics

Potassium Sorbate is typically supplied as a white to off-white crystalline powder or granulated material. It is valued in formulations because it can be incorporated into aqueous systems and provides preservative activity, particularly against yeasts and moulds.

Its performance depends strongly on formulation conditions. pH, water activity, product composition, processing conditions, and the presence of other formulation ingredients, such as emulsifiers like Lecithin, can influence how a finished product is formulated and preserved. Consequently, a specification should not be interpreted as a guarantee of performance in every formulation.

For industrial buyers, consistency is critical. Important characteristics can include assay or purity, moisture, impurities, particle characteristics, solubility, and microbiological quality where relevant. The exact acceptance criteria should be agreed between buyer and supplier before commercial supply.

Potassium Sorbate Applications

Potassium Sorbate is used across several industries because its preservative properties can help control microbial spoilage in suitable formulations. Food and beverage production represents one of its most established applications, while cosmetic and pharmaceutical formulations may also use the ingredient under their respective regulatory frameworks.

The appropriate grade and specification depend on the end use. A buyer should therefore select a product according to application rather than assuming that one specification is automatically suitable for every industry. Regulatory status, purity requirements, documentation, and permitted concentration can differ substantially between sectors.

Potassium Sorbate in Food and Beverage

In food and beverage manufacturing, Potassium Sorbate is used as a preservative to help control the growth of yeasts and moulds in suitable products. It can be found in applications such as fruit preparations, sauces, beverages, processed foods, and other formulations where sorbates are authorised. These formulations may also contain other functional food ingredients, such as Sorbitol, depending on the product’s formulation and processing requirements.

Its effectiveness is influenced by formulation pH and other product characteristics. For this reason, food manufacturers should evaluate E202 according to the specific food category and applicable maximum level rather than using a universal dosage.

EU food-additive legislation specifies both the permitted food categories and conditions under which additives may be used. The current Union framework should therefore be checked when developing or modifying a formulation.

Potassium Sorbate in Dairy and Bakery Products

Potassium Sorbate can be used in selected dairy and bakery applications where sorbates are permitted and where control of yeast and mould growth is required.Depending on the product, bakery and dairy formulations may also include flavouring ingredients such as Vanillin to achieve the desired sensory profile. In bakery products, its use can be relevant to products where surface mould development may affect shelf life and product quality.

In dairy-related applications, the exact permitted use depends on the specific product category and applicable European requirements. Product formulation, pH, moisture, processing, and packaging all influence preservative performance.

For commercial procurement, manufacturers should therefore specify the final application when requesting Food Grade Potassium Sorbate. A supplier can then provide the relevant technical documentation and confirm whether the supplied grade meets the buyer’s specification.

Potassium Sorbate in Cosmetics and Personal Care

Potassium Sorbate is also used as a preservative in cosmetic and personal-care formulations. In the EU, its cosmetic use is subject to Regulation (EC) No 1223/2009 and the applicable restrictions for preservatives.

ECHA currently lists Potassium Sorbate in Annex V of the EU Cosmetics Regulation as an allowed preservative, with a maximum concentration of 0.6%, expressed as sorbic acid, subject to the applicable regulatory conditions.

Cosmetic manufacturers should therefore distinguish between general chemical supply and cosmetic-compliant ingredient supply. Documentation, purity, impurities, and regulatory status should be evaluated against the requirements of the finished cosmetic product and its responsible person.

Potassium Sorbate in Pharmaceutical Applications

Potassium Sorbate can also be used in certain pharmaceutical formulations where antimicrobial preservation is required and where the formulation and regulatory requirements permit its use. The suitability of the material depends on the dosage form, formulation chemistry, intended function, and applicable pharmacopeial or manufacturer specifications.

Pharmaceutical buyers generally require a higher level of documentation than commodity purchasers. Depending on the application, this may include a detailed specification, batch COA, safety documentation, traceability information, and additional quality documentation.

The supplier should be informed that the material is intended for pharmaceutical use before quotation because a standard food-grade specification should not automatically be treated as equivalent to a pharmaceutical-grade requirement.

Potassium Sorbate E202 Specifications

A commercial specification defines whether a particular batch of Potassium Sorbate is suitable for the buyer’s process. Typical specifications can cover identity, assay, moisture, impurities, appearance, solubility, particle characteristics, and other quality parameters relevant to the intended application.

For European food applications, specifications should also be considered alongside the applicable EU food-additive specifications. Regulation (EU) 2024/2597 specifically amended provisions concerning sorbic acid (E200), potassium sorbate (E202), and their specifications, making current regulatory verification important when sourcing E202 for food use.

Food Grade Potassium Sorbate

Food Grade Potassium Sorbate is intended for applications where the ingredient must meet applicable food-additive requirements. Buyers should not rely solely on the term “food grade” in a supplier’s product description; they should request supporting specifications and batch documentation.

For EU buyers, the relevant question is whether the supplied material complies with the applicable requirements for the intended food application. The product should have an appropriate specification, identification, purity criteria, and documentation supporting its food-use status.

When requesting a quotation, provide the intended food application, required quantity, destination country, packaging preference, and documentation requirements. This allows the potassium sorbate supplier to quote a product that is technically and commercially appropriate rather than offering an unsuitable general-purpose grade.

Potassium Sorbate Purity and Quality Requirements

Purity is one of the most important purchasing criteria for Potassium Sorbate because inconsistent material quality can affect formulation performance and production reliability. Buyers should evaluate the supplier’s stated assay alongside other relevant parameters rather than considering purity alone.

A commercial specification may include identity, assay, loss on drying or moisture, acidity or alkalinity, heavy-metal or elemental impurity limits where applicable, and other parameters defined by the relevant specification.

The correct acceptance criteria depend on the application. A food manufacturer, pharmaceutical company, and cosmetic producer may require different supporting documentation even when purchasing the same chemical substance. The supplier should therefore provide a specification sheet that clearly identifies the grade and applicable standard.

Potassium Sorbate Appearance, Solubility, and Stability

Potassium Sorbate is commonly supplied as a white or nearly white crystalline powder or granulated solid. Appearance can provide a basic indication of material consistency, although visual inspection alone cannot confirm chemical purity or regulatory compliance.

Its solubility makes it suitable for incorporation into many aqueous formulations, but actual dissolution behaviour can depend on temperature, concentration, formulation composition, and processing conditions. The behaviour of a preservative system may also need to be evaluated alongside other formulation components, including emulsifiers such as Monoglycerides. Buyers developing concentrated premixes should validate the material under their own process conditions.

Storage stability also depends on appropriate handling. The material should generally be kept in its original, properly closed packaging and protected from excessive moisture, contamination, and unsuitable environmental conditions. Supplier-specific storage recommendations should take precedence over generic handling assumptions.

Potassium Sorbate Packaging and Storage

Bulk Potassium Sorbate can be supplied in packaging formats selected according to quantity, logistics, handling requirements, and customer preference. Commercial packaging may include bags, sacks, or other suitable industrial containers with protective inner layers where required.

Packaging should protect the product from moisture and contamination during transport and storage. For larger B2B shipments, the buyer should confirm palletisation, net weight per unit, number of bags per pallet, labelling, and transport conditions before placing the order.

Storage areas should be clean, dry, and suitable for chemical or food-ingredient storage, depending on the grade. Maintaining traceability between packaging units and batch documentation is also important for manufacturers operating controlled quality systems.

Potassium Sorbate Supplier for B2B Buyers

Choosing a potassium sorbate supplier involves more than comparing price per kilogram. Reliable supply requires alignment between the product specification, documentation, commercial terms, logistics, and quality system.

For B2B customers, the most useful supplier is one that can consistently deliver the required grade and provide documentation for each relevant batch. Buyers should assess whether the supplier can support both initial qualification and recurring orders.

A supplier should also be able to discuss quantity requirements, MOQ, lead time, packaging, delivery locations, and technical documentation before an order is confirmed. This reduces the risk of receiving a technically unsuitable product or discovering documentation gaps after procurement.

How to Choose a Potassium Sorbate Supplier

A suitable potassium sorbate supplier should be evaluated against the requirements of the buyer’s application and supply chain. Price is important, but it should be considered together with quality consistency, documentation, logistics, and responsiveness.

Before selecting a supplier, confirm:

• Product grade and intended application
• Technical specification and purity
• Batch-specific COA availability
• Regulatory and safety documentation
• Packaging and shelf-life information
• MOQ and bulk availability
• Lead time and delivery coverage
• Traceability and quality-control procedures

For recurring European supply, delivery capability can be particularly important. A supplier that can maintain consistent specifications across multiple batches provides greater value than a supplier offering a lower initial price but limited quality assurance.

Potassium Sorbate Supplier Quality and Certifications

Quality assurance is a major consideration when purchasing Potassium Sorbate for regulated applications. Buyers should ask the supplier which quality-management systems, certifications, and product-specific documentation apply to the offered material.

Depending on the application, relevant documentation may include certificates of analysis, safety data sheets, product specifications, declarations of compliance, allergen statements, GMO statements, or other customer-specific documents.

Certifications should be evaluated based on their relevance rather than simply counted. A supplier should be able to explain which certification applies to the manufacturing site, which applies to the product, and whether the supplied batch falls within its scope.

Potassium Sorbate Bulk Supply and MOQ

Bulk purchasing allows manufacturers to secure larger quantities of Potassium Sorbate for continuous production, but the appropriate order size depends on consumption, storage capacity, cash flow, and delivery frequency.

MOQ should therefore be discussed at quotation stage rather than assumed from an online product listing. Buyers should provide their expected annual or monthly requirement, preferred shipment size, destination, and delivery schedule.

A potassium sorbate supplier may be able to structure supply around full pallets, multiple pallets, or larger industrial shipments. For recurring demand, buyers can also discuss scheduled deliveries to reduce inventory pressure while maintaining supply continuity.

Potassium Sorbate COA and Technical Documentation

A Certificate of Analysis (COA) provides batch-specific analytical results and is one of the most important documents for B2B buyers. It allows the purchaser to compare the delivered batch against the agreed product specification.

The COA should identify the product and batch and report the relevant analytical parameters. Depending on the application, buyers may also require a specification sheet, SDS, regulatory declarations, allergen information, and other technical documents.

For quality-controlled manufacturing, documentation should be available before or alongside delivery according to the buyer’s qualification procedure. Buyers should communicate documentation requirements before ordering rather than requesting them after shipment.

Potassium Sorbate E202 Supplier in Europe

For European buyers, sourcing E202 requires attention to both commercial supply and regulatory compliance. The EU has a harmonised framework for food additives, but the permitted use of an additive depends on the relevant food category and conditions of use.

A European potassium sorbate supplier should therefore be able to provide documentation supporting the offered grade and help the buyer verify that the material corresponds to the intended application. Delivery across Europe can further simplify procurement by reducing logistical complexity and supporting predictable replenishment.

EU Food Additive Requirements for Potassium Sorbate

Potassium Sorbate E202 is included in the EU food-additive framework. Regulation (EC) No 1333/2008 establishes the Union list of authorised food additives and the conditions under which they may be used. Food additives must be used according to the applicable food categories and conditions specified by the regulation.

The regulatory framework can be updated. For example, Regulation (EU) 2025/2060 amended the authorised use of sorbic acid and potassium sorbate in non-heat-treated plant-based mousses.

Consequently, manufacturers should verify the current EU requirements for their specific food category instead of relying on a generic statement that E202 is “approved.”

REACH and Regulatory Compliance

REACH considerations are relevant when Potassium Sorbate is placed on the European market as a chemical substance. ECHA identifies potassium sorbate under CAS 24634-61-5 and provides regulatory information for the substance.

However, REACH compliance should not be confused with food-additive authorisation. A food manufacturer must consider the applicable food-additive legislation for the finished food application, while chemical supply may involve separate obligations under REACH, CLP, and other applicable legislation.

A responsible supplier should therefore provide the documentation appropriate to the product’s intended market and use. Buyers should verify that the supplier’s regulatory claims correspond to the actual grade and legal supply chain rather than assuming that one certification covers every regulatory requirement.

Potassium Sorbate vs. Other Preservatives

Selecting a preservative should be based on formulation requirements rather than on a simple ranking of preservatives. Potassium Sorbate, sorbic acid, sodium benzoate, and calcium sorbate differ in chemical form, solubility, formulation behaviour, and practical handling.

The most suitable option depends on the food or formulation, pH, target microorganisms, processing conditions, permitted use level, and regulatory requirements. For commercial buyers, availability and documentation can also influence the final choice.

Potassium Sorbate vs. Sorbic Acid

Potassium Sorbate is the potassium salt of sorbic acid, so the two substances are closely related but are not identical in their physical form. Potassium Sorbate is generally easier to handle in applications where the potassium salt is preferred, while sorbic acid is the corresponding free acid.

Their antimicrobial function is closely related because potassium sorbate can exist in equilibrium with sorbic acid depending on formulation conditions. The practical choice therefore depends on the product formulation, required concentration, pH, solubility, and processing method.

For B2B procurement, the buyer should specify which form is required rather than treating sorbic acid and potassium sorbate as interchangeable products.

Potassium Sorbate vs. Sodium Benzoate

Potassium Sorbate and Sodium Benzoate are both widely used preservative systems, but they are chemically different and can behave differently depending on formulation conditions. Sodium benzoate is the sodium salt of benzoic acid, while Potassium Sorbate is the potassium salt of sorbic acid.

The relative effectiveness of these preservatives depends strongly on pH and the microorganisms targeted. Consequently, choosing between them requires consideration of the complete formulation rather than simply comparing nominal dosage.

For manufacturers, regulatory permission for the specific food category is also essential. Both substances have defined conditions of use under EU food-additive legislation, and those conditions should be checked for the exact application.

Potassium Sorbate vs. Calcium Sorbate

Calcium Sorbate is another sorbate salt and shares the same broad preservative family as Potassium Sorbate. The principal difference is the counter-ion: potassium in Potassium Sorbate and calcium in Calcium Sorbate.

In practical formulation work, the choice can depend on solubility, mineral contribution, processing requirements, sensory considerations, and regulatory permission for the specific product category. Potassium Sorbate is widely available commercially and is commonly selected where a soluble sorbate salt is required.

For B2B purchasing, buyers should compare the actual technical specifications and application requirements instead of assuming that different sorbate salts can be substituted without formulation validation.

Conclusion

For manufacturers purchasing Potassium Sorbate in Europe, the best sourcing decision combines product quality, application suitability, regulatory compliance, documentation, supply capacity, and dependable logistics. Food manufacturers should specifically verify the Food Grade Potassium Sorbate specification and the applicable E202 conditions for their product category.

A qualified potassium sorbate supplier should be able to provide clear specifications, batch-level COA, appropriate technical and regulatory documentation, suitable packaging, competitive MOQ options, and reliable delivery across Europe. If you are planning a bulk requirement, provide your required quantity, application, destination, packaging preference, and documentation requirements to receive a specification-matched quotation.