Sodium Ascorbate E301
Sodium Ascorbate, also known as E301 or sodium L-ascorbate, is a food-grade water-soluble antioxidant and sodium salt of ascorbic acid. It is used by food manufacturers for oxidation control, colour protection, flavour protection, vitamin C contribution, reducing action and process support in selected food and beverage systems. This page is prepared as a detailed technical sourcing guide for purchasing, R&D, QA, production and regulatory teams.
Product identity
| Product | Sodium Ascorbate |
|---|---|
| Common names | E301; Sodium L-Ascorbate; Sodium Salt of Ascorbic Acid; Vitamin C Sodium Salt |
| Category | Antioxidants & Oxidation Control |
| Function | Antioxidant, reducing agent, colour-protection ingredient, vitamin C source and oxidation-control ingredient |
| E / INS number | E301 |
| CAS / identity | 134-03-2 |
| Typical formula | C6H7NaO6 |
| Typical chemistry | Sodium salt of L-ascorbic acid with reducing and antioxidant activity |
| Typical form | White to slightly yellow crystalline powder, granule or water-soluble grade |
| Functional profile | Water-soluble antioxidant, oxygen-scavenging support, colour stabilization, vitamin C contribution and reducing-system support |
Application fit
Potential use areas may include food systems where water-soluble antioxidant performance, colour protection or vitamin C contribution is required:
- Beverages, juice drinks, powdered drinks, instant beverages and vitamin systems
- Processed meat, cured meat, poultry and sausage systems where permitted
- Fruit and vegetable preparations, cut produce, canned foods and colour-sensitive systems
- Bakery, flour treatment, dough systems and dry premixes where technically suitable
- Sauces, dressings, condiments and water-based culinary systems
- Flavour systems, vitamin premixes, nutritional blends and fortified foods
- Snack seasonings, dry blends and oxidation-sensitive ingredient systems
Technical overview
Sodium Ascorbate is a reducing antioxidant used to help control oxidative reactions in selected food systems. It can help protect sensitive colours, flavours and vitamins from oxygen-related quality loss, and it may contribute vitamin C depending on formulation and regulatory treatment. Because it is the sodium salt of ascorbic acid, it is generally less acidic than ascorbic acid and can be useful where formulators want ascorbate functionality with a different pH contribution.
In industrial food manufacturing, Sodium Ascorbate should be selected according to assay, purity, particle size, solubility, sodium contribution, pH effect, sensory impact, reducing performance, stability, packaging and regulatory status. It is primarily a water-soluble ingredient, so formulation performance is very different from fat-soluble antioxidants used directly in oils and fats. For lipid systems, it may be used in combination with other antioxidant systems only when the formulation design supports proper dispersion and functionality.
Industrial functions
- Antioxidant activity: helps reduce oxidation reactions in water-based or compatible food systems.
- Colour protection: supports colour stability in selected fruit, vegetable, beverage and meat applications.
- Reducing action: contributes reducing capacity in formulations where oxidation-reduction control is required.
- Vitamin C contribution: may support vitamin C fortification or nutrient positioning where permitted and properly declared.
- Cured-meat support: may assist cured colour development and process consistency in permitted meat systems.
- Flavour protection: helps reduce oxidative off-note formation in selected flavour and beverage systems.
- Process support: can be used in blends, premixes and aqueous systems where rapid dissolution and controlled reducing action are needed.
Specification review points
Industrial buyers should compare every offered grade against the intended application and internal quality standard. Common review parameters include:
- Assay or active content by declared test method
- Identification, specific rotation and chemical purity
- Appearance, colour, odour and foreign matter limits
- pH of solution and clarity or colour of solution
- Loss on drying, moisture level and caking tendency
- Oxalate, related substances or process impurities where declared
- Heavy metals, lead, arsenic or elemental impurity limits where applicable
- Particle size, flowability, dissolution rate and dusting behaviour
- Sodium content and nutritional contribution where relevant
- Batch traceability, shelf life, storage requirements and packaging integrity
Formulation and processing behaviour
Sodium Ascorbate is usually added where it can dissolve and distribute uniformly. In beverages, sauces and aqueous premixes, it should be added under suitable mixing conditions and protected from unnecessary air incorporation. In dry blends, particle size and flowability should be compatible with the other ingredients to reduce segregation and ensure accurate dosing.
Its effectiveness can be influenced by pH, oxygen exposure, dissolved metals, heat treatment, light exposure, water activity, packaging headspace and interaction with other antioxidants or preservatives. Transition metals such as iron and copper can accelerate oxidation, so sequestrants or metal-control strategies may be relevant in sensitive products. Finished-product trials should evaluate both immediate performance and stability through shelf life.
Process and formulation considerations
- Define whether the ingredient is used for antioxidant protection, vitamin C contribution, colour protection or reducing-system support.
- Confirm solubility, dissolution time and mixing order under actual plant conditions.
- Evaluate pH impact, sodium contribution, sensory impact and compatibility with the final formula.
- Limit unnecessary exposure to air, moisture, heat and light during processing and storage.
- Check interaction with metals, acids, preservatives, colours, flavours, vitamins and mineral systems.
- Measure vitamin retention, colour stability, flavour stability and oxidation markers during shelf-life testing.
- Run pilot trials before changing supplier, particle size, grade, packaging or dosage level.
Quality assurance checklist
- Confirm supplier, manufacturer, country of origin and batch traceability.
- Check Certificate of Analysis values against the approved specification.
- Verify food additive grade, E301 declaration and destination-market suitability.
- Review allergen, GMO, BSE/TSE, halal, kosher and vegan declarations where required.
- Confirm heavy metal, lead, arsenic and process-related impurity limits where required.
- Check packaging integrity, caking condition, lot coding, expiry or retest date and storage conditions.
Application-specific purchasing guidance
For beverage and vitamin systems, the main technical questions are solubility, pH impact, vitamin C declaration, colour stability, flavour stability, metal-ion sensitivity and compatibility with sweeteners, acids, preservatives, minerals and flavours. Oxygen in headspace and packaging barrier can strongly influence vitamin retention and antioxidant performance.
For meat and cured-product systems, Sodium Ascorbate may be evaluated as a reducing agent that supports cured colour development and process consistency where permitted. The buyer should review use level, nitrite or curing system, salt level, pH, meat matrix, heat process, colour target, shelf-life target and local meat regulations before approval.
For fruit, vegetable and colour-sensitive systems, Sodium Ascorbate may help control browning and colour degradation when the formulation, pH and processing conditions are suitable. Trials should evaluate colour retention, flavour impact, vitamin retention, packaging oxygen and storage temperature.
For dry premixes and nutritional blends, the key review points are particle size, flowability, segregation risk, moisture protection, vitamin retention, compatibility with minerals and packaging barrier. Premix suppliers should confirm whether the grade is suitable for the required blend process and shelf-life target.
Sodium Ascorbate versus related antioxidants
Sodium Ascorbate is related to ascorbic acid, calcium ascorbate, potassium ascorbate and ascorbyl palmitate, but each ingredient behaves differently. Ascorbic acid is more acidic, calcium ascorbate contributes calcium, potassium ascorbate contributes potassium, and ascorbyl palmitate is more fat-compatible than sodium ascorbate. The correct choice depends on pH, mineral contribution, solubility, application, label target and antioxidant system design.
Sodium Ascorbate should not automatically be used as a one-to-one replacement for ascorbic acid or fat-soluble antioxidants. Replacing one antioxidant with another can change pH, sodium level, solubility, flavour, colour stability and regulatory labelling. The buyer should define the technical purpose before approving substitution.
Vitamin C and sodium declaration considerations
Sodium Ascorbate may contribute vitamin C and sodium to the finished product. Where vitamin C claims are planned, the buyer should verify local rules for nutrient calculation, overage, processing loss, shelf-life retention and label declaration. The declared value should be supported by formulation data and, where necessary, finished-product analysis.
Because Sodium Ascorbate contributes sodium, sodium-reduction projects should review whether ascorbic acid, calcium ascorbate, potassium ascorbate or another antioxidant system is more appropriate. The impact on taste, pH, nutrition facts and label claims should be assessed during formulation development.
Storage and handling
Store Sodium Ascorbate in original, tightly closed packaging in a clean, dry, cool and well-ventilated warehouse. Protect the product from moisture, oxygen exposure, direct sunlight, excessive heat, foreign odours and contamination. Because ascorbate powders can degrade or discolor under poor storage conditions, opened packaging should be resealed immediately after use and handled according to the supplier's recommendations.
Before production release, check the product name, batch number, expiry or retest date, packaging condition, appearance, odour and any signs of caking, wetting, discoloration or contamination. Production teams should follow FIFO or FEFO stock rotation and maintain traceability from warehouse receipt to finished product batch.
Packaging and logistics
Packaging depends on supplier, grade, moisture sensitivity and order quantity. Common industrial formats may include foil-lined bags, polyethylene-lined cartons, fibre drums, sealed pails or palletized export units. For sensitive applications, buyers should confirm oxygen and moisture barrier, inner liner type, resealability, nitrogen flushing where available and storage instructions.
- Small sample packs for laboratory screening and pilot production trials
- Bagged or carton-packed powder for regular industrial production
- Fibre drums or pails for improved moisture and handling protection
- Moisture-barrier packaging for sensitive vitamin or antioxidant applications
- Palletized export packing with batch labels, storage marks and document support
Regulatory and compliance notes
Sodium Ascorbate is identified as E301 in food additive contexts, but permitted use, maximum level, technical function, nutrient declaration and label wording may differ by country and food category. Buyers must verify the regulatory status of the offered grade in the destination market and confirm that it matches the final food category, antioxidant function, vitamin claim, sodium declaration, label declaration and customer standard.
For export supply, customers may require halal, kosher, vegan, non-GMO, allergen, BSE/TSE, heavy metal, residual solvent, contaminant, origin and food safety declarations. The exact document package should be agreed before order confirmation, especially for retailer-controlled, private-label, infant, beverage, meat, vitamin-fortified, nutrition or supplement-adjacent product lines.
Documents to request
- Product specification or technical data sheet
- Certificate of Analysis for the available batch or lot
- Safety Data Sheet and handling guidance
- Food additive grade statement and E301 reference where applicable
- Assay method, identification, specific rotation and impurity information
- pH, clarity of solution, loss on drying and particle-size information
- Vitamin C contribution and sodium contribution information where required
- Origin, manufacturer, shelf-life and storage information
- Allergen, GMO, BSE/TSE, halal, kosher and vegan declarations where required
- Heavy metal, lead, arsenic and elemental impurity information where applicable
- Packaging details, moisture-barrier information and pallet configuration
- Market-specific declarations requested by the destination country or final customer
Commercial sourcing guidance
When reviewing Sodium Ascorbate, compare the supplier specification against the intended food application, process conditions, target antioxidant function, vitamin declaration, label expectations and local rules. For industrial purchasing, the most useful inquiry normally includes target grade, assay requirement, application, physical form, packaging size, quantity, destination, Incoterm, delivery schedule and document requirements.
If the product is used in a technical antioxidant or vitamin system, the buyer should describe the complete application: food category, pH, water activity, process temperature, oxygen exposure, target shelf life, packaging format, desired vitamin declaration, sodium target and any existing antioxidant blend. This helps determine whether Sodium Ascorbate, Ascorbic Acid, Calcium Ascorbate, Ascorbyl Palmitate or a broader antioxidant system should be evaluated.
How to request this product
Send the product name, E number, target grade, reference specification, application, quantity, destination country, packaging preference, expected shipment date and required documents. If you already purchase Sodium Ascorbate, attach or describe your existing specification, label, Certificate of Analysis, vitamin target, sodium target or approved supplier standard so supplier options can be compared more accurately.
Useful answers
What is Sodium Ascorbate used for in food manufacturing?
Sodium Ascorbate E301 is typically used as a water-soluble antioxidant, reducing agent, colour-protection ingredient and vitamin C source. It may help protect colours, flavours, vitamins and oxidation-sensitive finished products. Exact suitability depends on grade, application, process, dosage, regulations and supplier documents.
Which applications commonly use Sodium Ascorbate?
It may be evaluated in beverages, vitamin systems, fruit and vegetable preparations, processed meat, cured meat systems, sauces, dressings, bakery systems, dry premixes, nutritional blends and other applications where water-soluble antioxidant or reducing functionality is technically useful.
Which documents should be requested?
Buyers commonly request a technical data sheet or specification, Certificate of Analysis, Safety Data Sheet, food additive grade statement, E301 reference, assay information, pH and solution clarity data, origin statement, shelf-life information, storage guidance, impurity information, allergen statement, GMO statement, halal or kosher documents where required, label details and packaging information.
Can Global Food Additives source Sodium Ascorbate?
Global Food Additives can review sourcing options for Sodium Ascorbate according to target specification, grade, application, quantity, destination, packaging and required documentation.
Is this product permitted in every country?
No. Food additive use, vitamin claims, antioxidant function, use level, sodium declaration and label requirements depend on destination-market rules, food category and buyer responsibility. The buyer should verify regulatory status before commercial use.
How should buyers compare Sodium Ascorbate suppliers?
Buyers should compare assay, purity, pH, solution clarity, impurity profile, particle size, solubility, Certificate of Analysis values, regulatory documents, packaging barrier, shelf life, minimum order quantity, lead time, origin, price stability and supplier change-control practices.
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