Potassium Sorbate E202
Potassium Sorbate is a food-grade sorbate preservative used by industrial manufacturers for yeast inhibition, mould control, spoilage reduction and shelf-life support in selected food and beverage systems. It is especially useful in acidic and mildly acidic products where preservative performance, clean sensory profile, water solubility and consistent dosing are important.
This page is prepared for purchasing teams, QA departments, R&D formulators, beverage processors, bakery manufacturers, dairy processors, sauce producers, importers and food manufacturers who need a structured technical starting point for specification review, supplier comparison, document collection and quotation requests.
Product identity
| Product | Potassium Sorbate |
|---|---|
| Common references | E202, INS 202, food grade potassium sorbate, potassium salt of sorbic acid, sorbate preservative |
| Category | Preservatives & Antimicrobials |
| Function | Preservative, antimicrobial shelf-life support, yeast inhibition and mould control ingredient |
| E / INS number | E202 / INS 202 |
| CAS / identity | 24634-61-5 |
| Chemical formula | C6H7KO2 |
| Chemical nature | Potassium salt of sorbic acid, normally supplied as a free-flowing food-grade crystalline powder or granule |
| Sorbic acid equivalent | Approx. 74.6% theoretical sorbic acid equivalent for pure potassium sorbate; use supplier assay for exact calculation |
| Typical form | Powder, granule, bead, compacted granule or aqueous solution grade depending on supplier |
| Main buying issue | Assay, sorbic acid equivalent, pH suitability, particle size, shelf stability and permitted use must be confirmed before approval |
Application fit
Potential use areas may include, subject to local regulation and product validation:
- Bakery products, fillings and toppings
- Beverages, syrups and beverage concentrates
- Cheese, processed cheese and dairy-style systems
- Sauces, dressings, dips and marinades
- Fruit preparations, jams, jellies and toppings
- Confectionery fillings and high-moisture sweet systems
- Pickled, acidic and refrigerated prepared foods
- Meat, poultry or seafood systems only where specifically permitted and validated
Industrial functionality overview
Potassium Sorbate is selected when a formulation requires inhibition of yeasts and moulds with relatively neutral sensory impact and good handling in water-based systems. In finished foods, sorbate effectiveness depends strongly on pH because the undissociated sorbic acid form provides the main antimicrobial action. As pH increases, a smaller fraction remains in the active acid form, so sorbate dosage and preservative strategy must be validated in the real product matrix.
Potassium Sorbate is not a full sterilization system and does not replace hygienic manufacturing, heat treatment, water-activity control, packaging design or validated shelf-life testing. It works best as part of a complete hurdle system that may include pH control, water activity, refrigeration, pasteurisation, clean filling, preservatives, oxygen control and suitable packaging.
Functional benefits by application
Bakery products, fillings and toppings
In bakery systems, Potassium Sorbate is often reviewed for mould inhibition and shelf-life support in cakes, muffins, tortillas, fillings, glazes, icings and high-moisture bakery products. It should be evaluated with product pH, moisture, water activity, packaging and expected storage temperature.
- Supports mould-control strategy in selected bakery systems.
- Can be used in fillings, toppings or dough systems where permitted.
- Requires validation against yeast, mould and rope-spoilage risk where relevant.
- Performance depends on pH, water activity, processing hygiene and packaging barrier.
Beverages, syrups and concentrates
In beverages, Potassium Sorbate can help inhibit yeast and mould growth in acidic drinks, syrups, concentrates and beverage bases. It should be tested with acids, sweeteners, flavours, colours, preservatives and heat treatment because sorbate can interact with the full formula and process.
- Supports preservation of acidic beverages and concentrates.
- Often evaluated with benzoates, acids and pasteurisation as part of a hurdle system.
- Requires complete dissolution and accurate dosing before filling.
- Should be checked for flavour impact, haze, sediment and preservative stability over shelf life.
Cheese and dairy-style products
In cheese, processed cheese and dairy-style systems, Potassium Sorbate may be reviewed for surface mould control, preservative support and shelf-life extension. The correct use depends on product pH, moisture, salt, packaging, starter cultures, surface treatment and destination-market rules.
- Can support mould-control strategy in selected cheese systems.
- May be applied through formulation, surface treatment or packaging-related systems where allowed.
- Requires compatibility testing with cultures, proteins, salt and heat treatment.
- Use must be checked against cheese category standards and label requirements.
Sauces, dressings and dips
In sauces, dressings, dips and marinades, Potassium Sorbate can help inhibit spoilage yeasts and moulds when the pH and water activity support sorbate performance. It should be validated with the complete acid, salt, sugar, oil, starch, gum and preservative system.
- Supports shelf-life strategy in acidic or mildly acidic sauces.
- Can help reduce yeast and mould spoilage in high-moisture systems.
- Requires verification of final pH, preservative distribution and residual level.
- Should be tested after pasteurisation, hot fill, cooling and storage.
Fruit preparations, jams and toppings
In fruit preparations, jams, jellies, dessert toppings and bakery fruit fillings, Potassium Sorbate may help control yeast and mould growth while supporting colour and flavour shelf life indirectly through spoilage reduction. Grade and dosage should be tested with fruit pH, soluble solids, water activity and heat treatment.
- Supports spoilage control in fruit-based systems.
- Can be used in reduced-sugar systems where water activity is higher, if permitted.
- Requires testing with pectin, acids, calcium, sugar and fruit solids.
- Finished product should be checked for syneresis, flavour stability and preservative retention.
Confectionery fillings and sweet systems
In sweet fillings, creams, syrups and intermediate-moisture systems, Potassium Sorbate may be evaluated where yeast and mould risks remain despite sugar content. Water activity, pH, fat phase and packaging determine whether sorbate will contribute meaningful protection.
- Can support preservation in high-moisture sweet fillings.
- Requires uniform dispersion to avoid local preservative gaps.
- Should be evaluated for taste, crystallization and texture impact.
- Finished-product challenge testing may be needed for commercial approval.
Sorbate chemistry and pH-dependent performance
Potassium Sorbate is normally chosen because it is easier to dissolve than sorbic acid, but the antimicrobial performance is linked to sorbic acid chemistry in the final food. The buyer should therefore evaluate potassium sorbate dosage, sorbic acid equivalent, final pH and preservative residual level together.
| Control point | Technical meaning | Industrial review point |
|---|---|---|
| Sorbic acid equivalent | Converts potassium sorbate dose into the equivalent sorbic acid contribution. | Useful for comparing supplier grades, label calculations and maximum-level review. |
| Final product pH | Controls the proportion of active undissociated sorbic acid. | Lower pH generally improves sorbate performance; validate in the actual formulation. |
| Water activity | Determines microbial growth potential and preservation requirement. | Higher water activity products may need stronger hurdle design and challenge testing. |
| Target organism | Sorbate is especially associated with yeast and mould inhibition. | Do not assume broad bacterial control without validation and microbiological evidence. |
| Residual preservative level | Amount remaining after processing, binding and storage. | Check residual level through shelf life where legal or customer limits apply. |
| Preservative system | Sorbate may be combined with pH control, benzoate, heat treatment, refrigeration or packaging. | Use challenge studies or validated shelf-life data for commercial approval. |
Technical grade selection criteria
Food-grade Potassium Sorbate should be selected by assay, sorbic acid equivalent, physical form, solubility, particle size, impurity profile, packaging and regulatory suitability. A low price per kilogram is not meaningful unless the active content, specification and shelf stability match the buyer’s formulation and market.
| Selection factor | Why it matters |
|---|---|
| Assay / purity | Determines active preservative content, dosage accuracy, cost-in-use and compliance with approved specification. |
| Sorbic acid equivalent | Required for comparing sorbate salts, calculating use level and evaluating permitted maximum levels. |
| Physical form | Powder, granule, bead or solution grades differ in dissolution rate, dusting, flowability and dosing method. |
| Particle size | Affects dry blending, segregation, dissolution speed, dust level and uniform preservative distribution. |
| Solubility | Critical for beverage, syrup, sauce, brine and liquid-preservative systems. |
| pH of solution | Helps confirm grade consistency and supports formulation calculations. |
| Moisture and caking tendency | Affects powder flow, shelf life, dissolution and storage performance. |
| Impurity profile | Aldehydes, acidity or alkalinity, heavy metals, arsenic, lead and insoluble matter may be required by specification. |
| Packaging barrier | Moisture, heat, light and oxygen exposure can affect handling and long-term quality. |
| Regulatory destination | Permitted categories, use levels and label declarations vary by country and application. |
Specification points to request
A complete sourcing review should be based on the supplier’s current technical data sheet and batch-specific certificate of analysis. Depending on grade, form and destination market, buyers commonly request the following parameters:
- Product identity: Potassium Sorbate / E202 / INS 202.
- CAS number and chemical formula.
- Assay or purity, typically expressed on dried basis where applicable.
- Sorbic acid equivalent and calculation basis.
- Potassium content where relevant to nutrition or mineral calculations.
- Appearance, colour, odour and physical form.
- pH of aqueous solution at specified concentration.
- Solubility and dissolution behaviour.
- Moisture, loss on drying and caking tendency.
- Particle size distribution, bulk density and flowability for powder or granule grades.
- Aldehydes, acidity or alkalinity and other specification impurities where required.
- Heavy metals, arsenic, lead, cadmium and mercury according to applicable standard.
- Microbiological limits where required by customer or application.
- Shelf-life, storage temperature, packaging type and pallet configuration.
- Food-grade, E202 declaration and destination-market compliance statement.
Processing and formulation guidance
Potassium Sorbate should be added through a process that ensures complete dissolution and uniform distribution. Local overdosing can create taste issues, while poor distribution can leave areas of the product insufficiently protected. The preservative should be validated under real processing and storage conditions.
- Dissolution: dissolve in water or an appropriate aqueous phase with sufficient agitation before addition where possible.
- pH control: confirm final pH after full mixing, heating, cooling and equilibration.
- Dosage: calculate by sorbic acid equivalent and permitted use level in the destination market.
- Heat treatment: validate preservative retention and performance after pasteurisation, baking, hot fill or cooking.
- Dry blending: use particle-size-compatible grades for premixes to reduce segregation and improve uniformity.
- Microbiology: support commercial use with shelf-life data or challenge studies when the product is high risk.
- Scale-up: confirm that lab dosage and distribution remain valid in production tanks, mixers, depositors and filling lines.
Application-specific process controls
Bakery control points
- Product pH, moisture and water activity.
- Distribution in dough, batter, filling or topping.
- Effect of baking, cooling and packaging.
- Mould growth risk under target storage conditions.
- Finished-product taste and label compliance.
Beverage control points
- Target pH and acid system.
- Complete dissolution in concentrate or final beverage.
- Compatibility with flavours, colours and sweeteners.
- Yeast and mould risk after filling.
- Residual preservative level through shelf life.
Cheese and dairy control points
- Product pH, salt level and moisture.
- Surface versus internal preservative application.
- Interaction with cultures, proteins and stabilizers.
- Heat treatment, cooling and packaging atmosphere.
- Food-standard and label declaration review.
Sauce and dressing control points
- pH, water activity and preservative combination.
- Oil, gum, starch and emulsifier compatibility.
- Hot-fill, pasteurisation or cold-fill process.
- Yeast, mould and spoilage challenge testing.
- Flavour, colour and texture after storage.
Compatibility with other ingredients
Potassium Sorbate should be evaluated inside the complete formulation because acids, sweeteners, proteins, salts, flavours, colours and packaging can influence preservative performance and finished-product quality.
Acids and buffers
Citric, malic, lactic, acetic, phosphoric and tartaric acid systems affect final pH and sorbate performance.
- Confirm final pH after equilibration.
- Check pH drift during shelf life.
- Evaluate preservative performance at real pH.
Benzoates and other preservatives
Sorbate is often reviewed with benzoates, organic acids, heat treatment or refrigeration as part of a hurdle system.
- Confirm legal use of each preservative.
- Evaluate synergy and sensory impact.
- Validate with challenge studies where needed.
Proteins, fats and hydrocolloids
Dairy proteins, plant proteins, fats, gums and starches can affect preservative distribution and product stability.
- Check phase separation and viscosity.
- Confirm uniform preservative distribution.
- Monitor texture after storage.
Flavours, colours and packaging
Finished-product quality depends on preservative compatibility with flavours, colours, oxygen exposure and packaging material.
- Test flavour stability and aftertaste.
- Monitor colour over shelf life.
- Review oxygen and moisture barrier performance.
Quality, compliance and documentation
For international sourcing, documentation quality is critical because preservative use is closely reviewed for permitted categories, maximum levels, label declaration and final product safety. Global Food Additives can support supplier communication and document collection before purchase and export.
Core documents
- Technical data sheet or product specification.
- Certificate of analysis for the available batch or lot.
- Safety data sheet where applicable.
- Manufacturing origin and country-of-origin statement.
- Shelf-life and recommended storage conditions.
- Packaging, net weight and pallet configuration.
Sorbate-specific documents
- E202 / INS 202 declaration.
- CAS number and chemical identity statement.
- Assay and sorbic acid equivalent declaration.
- Particle size and physical-form data.
- Food-grade and destination-market compliance statement.
- Application guidance and dosage recommendation where available.
Customer-standard documents
- Allergen statement.
- GMO status statement where required.
- Halal or kosher certificate if required.
- Vegan or vegetarian suitability statement where applicable.
- Heavy metal and contaminant statement where required.
- Residual solvent or production-route statement where required by customer standard.
Supply-chain review
- Manufacturer identity and approved supplier status.
- Batch coding and lot traceability.
- Food safety certification such as HACCP, ISO 22000, FSSC 22000 or equivalent where available.
- Specification revision control and change notification.
- Lead time, minimum order quantity and sample availability.
- Export documents and import requirements for the destination country.
Storage, handling and packaging considerations
Potassium Sorbate should be stored according to the supplier’s specification in closed original packaging, protected from moisture, contamination, direct sunlight, excessive heat and strong odours. Powder and granule grades should be handled carefully to maintain flowability, reduce caking and preserve active content.
- Keep bags, cartons, drums or containers sealed when not in use.
- Store in a cool, dry, clean warehouse away from water and non-food chemicals.
- Use first-expiry-first-out stock rotation.
- Protect from humidity, condensation and damaged pallets.
- Use dust-control practices during weighing, transfer and dry blending.
- Avoid prolonged exposure to direct sunlight, heat and open air.
- Inspect incoming goods for caking, discoloration, odour change, water damage or packaging damage.
- Confirm bag size, carton size, drum size, pallet pattern, container loading quantity and export packaging before shipment.
Technical purchasing notes
When reviewing Potassium Sorbate, compare the supplier specification against the intended food application, process conditions, target function, label expectations and destination-market rules. For industrial purchasing, the most useful inquiry normally includes assay, sorbic acid equivalent, physical form, particle size, packaging size, quantity, destination and document requirements.
Buyers should avoid approving preservative systems only by product name. A stronger approval process links the exact supplier grade with the intended food category, target organism, final pH, water activity, use level, sorbic acid equivalent, analytical method, label declaration and shelf-life target.
| Information to include | Example details |
|---|---|
| Application | Bakery, beverage, syrup, cheese, dairy-style product, sauce, dressing, fruit preparation, filling, confectionery, pickle, dip or refrigerated prepared food. |
| Target function | Yeast inhibition, mould control, shelf-life support, preservative system, surface treatment, filling protection or spoilage reduction. |
| Formula conditions | Final pH, water activity, moisture, sugar level, salt level, acid type, preservative combination and heat treatment. |
| Quality requirement | Assay, sorbic acid equivalent, E202 declaration, particle size, solubility, low moisture, microbiology or heavy-metal limit. |
| Physical form | Powder, crystal, granule, compacted granule, bead, solution grade, low-dust grade or existing supplier reference. |
| Validation target | Target residual preservative level, yeast/mould specification, shelf-life target, challenge-test plan or current formula reference. |
| Quantity | Sample, trial quantity, carton quantity, drum quantity, bag quantity, pallet quantity, container quantity or annual contract volume. |
| Destination | Country, port, city, delivery term and import-document requirements. |
| Documents | TDS, specification, COA, SDS, E202 declaration, sorbic acid equivalent, food-grade statement, allergen, GMO, halal, kosher, origin and shelf-life documents. |
Documents to request
- Product specification or technical data sheet.
- Certificate of analysis for available batch or lot.
- Safety data sheet where applicable.
- Food-grade, E202 / INS 202 or regulatory status statement where relevant.
- Assay, sorbic acid equivalent and CAS number declaration.
- Particle size, solubility, pH, moisture and storage information.
- Origin, manufacturer, shelf-life and production-route information.
- Allergen, GMO, halal, kosher, vegan or vegetarian statements where required.
- Microbiological, heavy metal and contaminant statements where required.
- Application guidance, use-level guidance or preservative-system notes where available.
- Packaging details, net weight, pallet configuration and container loading information.
- Market-specific declarations required by the destination country.
How to request this product
Send the product name, target specification, intended application, final product pH, water activity, target organism, required assay, physical form, quantity, destination country, packaging preference, expected shipment date and required documents. If you already purchase Potassium Sorbate, attach or describe your existing specification, label, supplier reference, particle-size requirement, sorbic acid equivalent or certificate of analysis so supplier options can be compared more accurately.
Useful technical answers
What is Potassium Sorbate used for in food manufacturing?
Potassium Sorbate is used as a preservative for yeast and mould inhibition, spoilage control and shelf-life support in selected food and beverage systems. It is commonly reviewed for bakery, beverages, cheese, sauces, dressings, fruit preparations, fillings, dips and acidic or mildly acidic products. Exact suitability depends on grade, pH, water activity, application, use level, regulation and supplier documents.
Is Potassium Sorbate the same as Sorbic Acid?
No. Potassium Sorbate is the potassium salt of sorbic acid and is usually selected for better water solubility. Sorbic acid and potassium sorbate differ in solubility, formula calculations and handling, so dosage should be calculated using sorbic acid equivalent and approved by R&D and QA teams.
Why does pH matter for Potassium Sorbate?
Sorbate preservative performance is pH-dependent because the undissociated sorbic acid form is the most relevant antimicrobial form. Lower-pH foods usually allow better sorbate performance, while higher-pH foods require careful validation and may need other preservation hurdles.
Which documents should be requested?
Buyers commonly request a technical data sheet, product specification, certificate of analysis, safety data sheet where applicable, E202 / INS 202 declaration, CAS confirmation, assay, sorbic acid equivalent, particle-size data, allergen statement, GMO statement, halal or kosher certificate, shelf-life information, storage conditions, packaging details and market-specific compliance declarations.
Can Global Food Additives source Potassium Sorbate?
Global Food Additives can review sourcing options for Potassium Sorbate according to target specification, assay, particle size, application, quantity, destination, packaging preference, delivery term and required documentation.
Is this product permitted in every country?
No. Preservative use depends on destination-market rules, food category, use level, label requirements and buyer responsibility. Always confirm local regulatory status before commercial use.
Tell us which Potassium Sorbate grade you need.
Send product name, application, target function, assay, sorbic acid equivalent, final pH, water activity, physical form, specification, quantity, destination country, packaging preference, delivery term and document requirements. Our team will review your inquiry and respond from [email protected].
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