Sodium Diacetate in Food: E262(ii) Preservative, Applications and Supplier Guide
Sodium diacetate is widely used in food processing as a preservative, flavor enhancer and acidity regulator. For food manufacturers, importers and distributors, it is usually purchased as a food grade acetate additive under the name Sodium Diacetate E262(ii).
Compared with a general “salt and vinegar” seasoning ingredient, food grade sodium diacetate is more important in commercial food production because it can help control microbial growth, adjust acidity and improve flavor stability in selected applications.
For buyers, the key question is not only “What is sodium diacetate?” but also whether it is food grade, what specifications should be checked, which food applications use it, and what documents a reliable supplier should provide.
This guide explains sodium diacetate in food from a practical B2B purchasing perspective.
What Is Sodium Diacetate?
Sodium diacetate is a compound of sodium acetate and acetic acid. It is usually supplied as a white crystalline powder with a slight acetic acid or vinegar-like odor.
In the food industry, sodium diacetate is also known as:
| Item | Information |
|---|---|
| Product Name | Sodium Diacetate |
| E Number / INS Number | E262(ii) |
| CAS No. | 126-96-5 |
| Molecular Formula | C4H7NaO4 |
| Appearance | White crystalline powder |
| Main Components | Sodium acetate and acetic acid |
| Typical Function | Preservative, flavor enhancer, pH control agent |
For food additive buyers, E262(ii) is an important identification because it helps distinguish sodium diacetate from other acetate salts such as sodium acetate E262(i), potassium acetate E261 and calcium acetate E263.
If you need a food grade product specification, you can check our Sodium Diacetate E262(ii) product page.
What Does Sodium Diacetate Do in Food?
Sodium diacetate has three main functions in food processing: preservation, flavor enhancement and pH control.
1. Preservative and Antimicrobial Support
One of the main reasons food manufacturers use sodium diacetate is its preservative effect. It can help inhibit the growth of certain bacteria, yeasts and molds, depending on the food system, formula, pH, moisture level and processing conditions.
This makes sodium diacetate useful in products where shelf life, microbial control and flavor stability are important.
Common food categories include:
- Processed meat and poultry products
- Bakery products
- Seasonings and snack foods
- Sauces and gravies
- Soups and instant food products
- Pickled and acidic food systems
In meat and poultry applications, sodium diacetate is often evaluated as part of an antimicrobial system. For example, in the United States, FSIS has allowed sodium diacetate for antimicrobial use in meat and poultry products up to 0.25% by weight of total formulation. Buyers should always confirm the permitted level and labeling rules in their own destination market.
2. Flavor Enhancement
Sodium diacetate can provide a mild vinegar-like, salty and acidic flavor profile. This is why it is often used in seasoning systems, snack foods and savory products.
It is especially suitable when manufacturers want to create or support a sour, tangy or “salt and vinegar” taste without using liquid vinegar.
Typical flavor-related applications include:
- Seasoned potato chips
- Extruded snacks
- Dry seasoning blends
- Pickled-flavor products
- Meat seasonings
- Instant noodle seasoning powders
- Sauce and dressing formulations
3. pH Control and Acidity Adjustment
Sodium diacetate can also act as a pH control agent. In many food systems, controlling acidity is important for taste, texture, microbial stability and overall product consistency.
It is not used in the same way as phosphate water-retention agents or emulsifying salts. Its value is mainly related to acidity, preservation and flavor contribution.
This is important because sodium diacetate should not be confused with sodium phosphate additives. Phosphates are commonly used for water retention, emulsification, texture improvement and protein functionality, while sodium diacetate belongs to the acetate family and is mainly used for preservation, acidity and flavor.
Is Sodium Diacetate Safe to Use in Food?
Sodium diacetate is recognized for use in food when it meets food additive regulations and is used according to applicable limits and good manufacturing practice.
In the United States, sodium diacetate is listed under 21 CFR 184.1754. The regulation identifies sodium diacetate as a substance used as an antimicrobial agent, flavoring agent and pH control agent, with food use levels not exceeding current good manufacturing practice.
However, allowed applications and dosage limits can vary by country or region. Importers and food manufacturers should check:
- Local food additive regulations
- Maximum permitted use level
- Product category restrictions
- Labeling requirements
- End customer specification
- Halal, Kosher or other certification requirements
As a supplier, we recommend confirming the destination market before bulk purchase.
Common Food Applications of Sodium Diacetate
Processed Meat and Poultry
Sodium diacetate can be used in selected processed meat and poultry products to support flavor and microbial control. It may be used alone or together with other ingredients depending on the formulation.
Typical applications include:
- Cooked meat products
- Sausages
- Ham
- Poultry products
- Meat snacks
- Marinated meat products
- Ready-to-eat meat products
For meat processors, sodium diacetate is usually considered when the formulation requires better shelf-life support, mild acidity and flavor balance.
Bakery Products
In bakery products, sodium diacetate can help with preservation and flavor control. It may be used in selected bread, cakes, pastries, tortillas and other baked goods where mold inhibition or acidity adjustment is needed.
Common bakery applications include:
- Bread
- Cakes
- Muffins
- Pastries
- Tortillas
- Baked snacks
- Packaged bakery products
For bakery manufacturers, the key is to control dosage carefully so that the final product does not have an overly acidic or vinegar-like taste.
Snacks and Seasonings
Sodium diacetate is widely associated with savory snack seasoning because of its characteristic vinegar-like flavor.
It can be used in:
- Potato chips
- Corn snacks
- Extruded snacks
- Nut seasonings
- Popcorn seasonings
- Dry seasoning blends
- Salt and vinegar flavor systems
For seasoning manufacturers, sodium diacetate provides both acidity and flavor impact in a dry powder form, which is convenient for blending and storage.
Sauces, Gravies and Condiments
Sodium diacetate can also be used in sauces and condiments where acidity, flavor and preservation are important.
Typical examples include:
- Sauces
- Gravies
- Dips
- Dressings
- Pickled condiments
- Seasoning pastes
- Savory liquid or semi-liquid products
In these applications, it is important to test the final pH and flavor balance because sodium diacetate contributes acidity.
Soups and Instant Foods
For instant soups, noodle seasonings and ready-to-eat foods, sodium diacetate may be used as part of a flavor and preservation system.
Typical applications include:
- Instant soup mixes
- Instant noodle seasoning
- Frozen prepared meals
- Ready-to-eat meals
- Powdered savory mixes
The dry powder form makes sodium diacetate convenient for industrial blending.
Sodium Diacetate vs Sodium Acetate: What Is the Difference?
Sodium diacetate E262(ii) and sodium acetate E262(i) are related acetate additives, but they are not the same.
| Item | Sodium Acetate | Sodium Diacetate |
|---|---|---|
| E Number | E262(i) | E262(ii) |
| Main Role | Buffering, acidity regulation, flavor | Preservative, flavor, pH control |
| Flavor Profile | Mild acetate taste | Stronger vinegar-like acidity |
| Acidity | Lower | Higher |
| Common Use | Buffer systems, seasoning, food processing | Preservation, snacks, meat, bakery, sauces |
| Buyer Focus | Purity, pH, solubility | Free acetic acid, sodium acetate content, moisture, heavy metals |
If your formulation requires stronger acid flavor or preservative support, sodium diacetate may be more suitable. If your formulation mainly needs buffering or sodium acetate functionality, sodium acetate may be more appropriate.
For bulk purchasing, buyers should confirm the exact product name, E number and specification before ordering.
Food Grade Sodium Diacetate Specification: What Buyers Should Check
When sourcing sodium diacetate for food production, buyers should not only compare price. Specification consistency is more important for long-term food manufacturing.
A typical food grade sodium diacetate specification may include:
| Test Item | Typical Requirement |
|---|---|
| Appearance | White crystalline powder |
| Free Acetic Acid | 39.0–41.0% |
| Sodium Acetate | 58.0–60.0% |
| Moisture | ≤2.0% |
| pH Value | 4.5–5.0 |
| Readily Oxidizable Substances | ≤0.2% |
| Arsenic | Controlled according to food grade standard |
| Lead | Controlled according to food grade standard |
| Mercury | Controlled according to food grade standard |
At Guizhou Lvyin Biotech, our sodium diacetate product page lists food grade specification items including free acetic acid, sodium acetate, moisture, pH value and heavy metal limits.
For importers and distributors, we recommend checking the latest COA before shipment because actual batch values may vary within the approved specification range.
Why Low Heavy Metals Matter
Food grade sodium diacetate is used in food products, so heavy metal control is an important part of quality evaluation.
Buyers should pay attention to:
- Lead
- Arsenic
- Mercury
- Other heavy metals required by local regulation
- Batch COA data
- Third-party test requirements if needed
Low heavy metal control is especially important for brands selling to strict markets such as the United States, European Union, Middle East, Southeast Asia and other regulated food markets.
When comparing suppliers, do not only ask for the lowest price. Ask whether the supplier can provide consistent food grade quality, batch COA and export documents.
Documents You Should Request from a Sodium Diacetate Supplier
For international purchasing, documentation is often as important as the product itself. A reliable supplier should be able to provide complete technical and export documents.
| Document | Why It Matters |
|---|---|
| COA | Confirms batch quality and test results |
| TDS | Shows technical specification and application information |
| SDS / MSDS | Required for safe handling, storage and transport |
| Food Grade Statement | Confirms suitability for food applications |
| Halal Certificate | Important for Muslim markets |
| Kosher Certificate | Required by some food manufacturers |
| Allergen Statement | Required by many food brands |
| GMO Statement | Often requested by international buyers |
| Origin Certificate | Used for customs clearance |
| Packing List and Commercial Invoice | Required for import/export process |
If you are importing sodium diacetate for food production, please confirm your required documents before shipment.
Packaging and Storage
Food grade sodium diacetate is commonly supplied in 25 kg bags or customized packaging according to buyer requirements.
Recommended storage conditions:
- Store in a cool, dry and well-ventilated warehouse
- Keep away from moisture
- Keep packaging sealed after opening
- Avoid direct sunlight
- Avoid contamination with strong odors or incompatible materials
- Follow the SDS for handling and storage
Because sodium diacetate has a slight acetic acid odor and is hygroscopic, proper storage is important for maintaining powder flowability and product stability.
How to Choose a Sodium Diacetate Supplier
When choosing a sodium diacetate supplier, buyers should evaluate more than price. A reliable supplier should be able to support long-term quality and export stability.
1. Food Grade Quality
Make sure the supplier provides food grade sodium diacetate, not industrial grade material. Food grade products should meet relevant food additive specifications and include batch COA.
2. Stable Batch Control
For food manufacturers, stable quality is more important than one-time low pricing. Ask the supplier about specification control, moisture control, heavy metal limits and production consistency.
3. Complete Documents
If you are importing sodium diacetate, ask for COA, SDS, TDS, Halal, Kosher and other documents before placing a bulk order.
4. Export Experience
A supplier with export experience can help reduce problems in customs clearance, labeling, packaging and shipping documents.
5. Flexible Packaging and Supply
Different buyers may need 25 kg bags, palletized cargo, private label packaging or customized shipping arrangements. Confirm these details before ordering.
Why Buy Sodium Diacetate from Guizhou Lvyin Biotech?
Guizhou Lvyin Biotech supplies food grade phosphates, acetates, citrates and customized food additive solutions for international buyers.
For sodium diacetate, we can support:
- Food grade sodium diacetate E262(ii)
- Stable quality and batch COA
- Low heavy metal control
- Standard 25 kg export packaging
- Flexible packaging according to customer requirements
- SDS, TDS, COA and export documents
- Halal and other documents according to order requirements
- Export support for distributors, food factories and ingredient traders
If you are looking for a reliable sodium diacetate supplier from China, you can contact us for the latest specification, quotation and sample availability.
View product details: Sodium Diacetate E262(ii)
Frequently Asked Questions About Sodium Diacetate in Food
Is sodium diacetate a preservative?
Yes. Sodium diacetate is commonly used as a food preservative and antimicrobial support ingredient. It can help inhibit certain microorganisms depending on the food system, dosage, pH and processing conditions.
What is the E number of sodium diacetate?
The E number of sodium diacetate is E262(ii). It belongs to the acetate food additive family.
Is sodium diacetate the same as sodium acetate?
No. Sodium acetate is E262(i), while sodium diacetate is E262(ii). Sodium diacetate contains sodium acetate and acetic acid, so it usually has stronger acidity and a more vinegar-like flavor profile.
What foods use sodium diacetate?
Sodium diacetate may be used in processed meat, poultry products, bakery products, snacks, seasonings, sauces, gravies, soups, pickled products and instant foods.
What documents should I request before buying sodium diacetate?
For food grade sodium diacetate, buyers should request COA, SDS, TDS, food grade statement, Halal or Kosher certificate if required, and export documents such as packing list, invoice and certificate of origin.
Can sodium diacetate be exported in 25 kg bags?
Yes. Sodium diacetate is commonly supplied in 25 kg bags, with palletized shipment or customized packaging available according to customer requirements.
Conclusion
Sodium diacetate E262(ii) is an important food additive used for preservation, acidity control and flavor enhancement. For food manufacturers and importers, the most important purchasing factors are food grade quality, stable specification, low heavy metals, complete documentation and reliable export support.
Guizhou Lvyin Biotech supplies food grade sodium diacetate for global food ingredient buyers. Contact us to request the latest COA, specification and quotation for your market.
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