Sodium Acid Pyrophosphate, also known as SAPP or E450(i), is a food grade phosphate widely used in bakery, leavening systems, processed foods, potato products, seafood, meat products, sauces and other food applications.
In food processing, SAPP is mainly used as a leavening acid, pH control agent, chelating agent, texture improver and processing stabilizer. It is especially important in baking powder systems, cakes, biscuits, pancakes, waffles, quick breads and other bakery products that require controlled carbon dioxide release.
GJ Phosphate supplies food grade Sodium Acid Pyrophosphate SAPP for food manufacturers, importers and distributors. We can provide product specifications, COA/MSDS, sample support, export packaging and quotation according to your application requirements.
- Food grade Sodium Acid Pyrophosphate SAPP / E450(i) supply
- Suitable for bakery, leavening systems, processed foods, potatoes, sauces and selected meat products
- Supports leavening reaction, pH control, texture improvement and product stability
- COA, MSDS, specification sheet and export documents available upon request
- Quotation support for food manufacturers, importers and distributors
Request SAPP COA/MSDS & Quotation
What Is Sodium Acid Pyrophosphate?
Sodium Acid Pyrophosphate, often abbreviated as SAPP, is a phosphate food additive with the chemical formula Na2H2P2O7. In the food additive system, it is commonly identified as E450(i), which belongs to the diphosphate or pyrophosphate group.
SAPP is usually supplied as a white powder. It is soluble in water and can be used in food systems where controlled acidity, leavening performance, pH adjustment or texture support is required.
Because SAPP belongs to the E450 phosphate group, buyers can also review our related page: Emulsifier E450 Food Grade Diphosphates.
Food Grade SAPP Specification
Food grade Sodium Acid Pyrophosphate should meet the required purity, safety and compliance standards of the destination market. The exact specification may vary according to the required grade, application and buyer requirements.
| Property | Specification |
|---|---|
| Chemical Formula | Na2H2P2O7 |
| Molecular Weight | Approximately 221.94 g/mol |
| Appearance | White crystalline powder |
| Solubility | Highly soluble in water |
| CAS No. | 7758-16-9 |
| EC No. | E 450(i) |
| pH (1% solution) | 3.5 - 4.5 |
| Assay | ≥ 95% |
| Loss on Drying | ≤ 0.5% |
| Arsenic (As) | ≤ 3 mg/kg |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Fluoride (F) | ≤ 50 mg/kg |
| Lead (Pb) | ≤ 2 mg/kg |
| Mercury (Hg) | ≤ 1 mg/kg |
| Cadmium (Cd) | ≤ 1 mg/kg |
| Particle Size | Customizable |
| Microbiological Standards | Conforms to regulations |
| Allergen Information | Free from allergens |
| GMO Status | Non-GMO |
| Shelf Life | 2 years |
For purchasing, buyers usually need to confirm assay, pH value, water insoluble matter, heavy metals, fluoride, arsenic, particle size, packaging and available documents before placing an order.
Why Is Sodium Acid Pyrophosphate Used in Food?
Sodium Acid Pyrophosphate is used in food because it provides several important functions during processing and storage. Its main role depends on the food system and formulation.
1. Leavening Acid in Bakery Products
SAPP is widely used as a leavening acid in baking powder and bakery formulas. When SAPP reacts with sodium bicarbonate, carbon dioxide is released. This gas helps dough or batter rise and creates a light texture in baked goods.
Common bakery applications include:
- Cakes
- Biscuits
- Cookies
- Pancakes
- Waffles
- Muffins
- Quick breads
- Doughnuts
- Bakery premixes
For a broader explanation of leavening systems, read our guide: Types of Leavening Agents in Baking.
2. Controlled Gas Release
In industrial baking, reaction speed is important. Different SAPP grades may provide different reaction rates, which can affect mixing stability, baking volume, crumb structure and final product texture.
Food manufacturers should choose the suitable SAPP grade according to the final product, processing method, required reaction speed and baking conditions.
3. pH Control and Buffering
SAPP can help control pH in food systems. Proper pH control may support better texture, stability, color and processing performance.
In some formulations, SAPP may be used together with other phosphate ingredients to achieve balanced pH and functionality.
4. Texture Improvement
SAPP can help improve texture in bakery, potato products, processed foods and selected food systems. In bakery products, it supports volume and crumb structure. In processed foods, it may help maintain consistency and quality during processing.
5. Chelating and Stabilizing Support
SAPP may help bind metal ions and reduce undesirable interactions in some food systems. This can support product stability, appearance and shelf-life performance depending on the application.
Sodium Acid Pyrophosphate in Bakery and Leavening Systems
Bakery is one of the most important application areas for Sodium Acid Pyrophosphate. In baking powder systems, SAPP is used as an acid component that reacts with bicarbonate to release carbon dioxide.
This function helps create:
- Better product volume
- Light and fluffy texture
- Improved crumb structure
- More stable processing performance
- Controlled leavening reaction
SAPP is commonly used in cakes, muffins, biscuits, cookies, pancakes, waffles and quick breads. It is also relevant for bakery premixes where consistent reaction performance is required.
Because SAPP is classified as E450(i), buyers comparing E450 ingredients can also read: Emulsifier E450 and Food Grade Diphosphates.
Other Food Applications of SAPP
Besides bakery and leavening systems, Sodium Acid Pyrophosphate may be used in other food applications depending on the formulation and local food regulations.
Processed Potatoes
SAPP is used in some potato products to help maintain color, texture and appearance. It may be applied in processed potatoes, instant mashed potatoes and frozen potato products depending on the formulation.
Processed Foods
In prepared foods, frozen foods and instant foods, SAPP may help support texture, pH control and processing stability.
Sauces and Dressings
SAPP can support pH control and stability in selected sauces, dressings and food systems where consistency is important.
Meat and Seafood Applications
In selected meat or seafood systems, SAPP may be used for pH adjustment or functional support. However, for strong water retention and processing stability in meat or seafood, buyers may also need other phosphates such as STPP or polyphosphate stabilizers.
SAPP and E450(i): What Is the Relationship?
SAPP is one type of E450 food additive. More specifically, Sodium Acid Pyrophosphate is identified as E450(i), which belongs to the diphosphate group.
E450 includes multiple phosphate ingredients, such as sodium acid pyrophosphate, trisodium pyrophosphate, tetrasodium pyrophosphate and other diphosphates. These products are not always interchangeable because they have different pH behavior, solubility and functions.
If your application is bakery leavening, SAPP / E450(i) is usually one of the most relevant E450 options. If your application is dairy, sauces, processed cheese or stabilization, other E450 types may be more suitable.
Is Sodium Acid Pyrophosphate Safe in Food?
Food grade Sodium Acid Pyrophosphate is used in food processing where permitted by applicable food regulations. Finished food manufacturers should follow the permitted usage level, labeling rules and food additive requirements of the destination market.
For industrial buyers, it is important to confirm product grade, specification, COA, MSDS, heavy metal limits, labeling requirements and compliance documents before use.
Because food additive regulations may vary by country or region, manufacturers should always confirm local requirements before using SAPP in a finished product.
Is Sodium Acid Pyrophosphate Natural or Synthetic?
Sodium Acid Pyrophosphate is generally manufactured through a controlled chemical process using phosphate and sodium-based raw materials. It is not normally extracted directly from food as a naturally occurring ingredient.
The controlled manufacturing process helps ensure consistent quality, purity and functionality. For food applications, buyers should focus on food grade compliance, impurity control, documentation and suitability for the target market.
What Is Food Grade Sodium Acid Pyrophosphate?
Food grade Sodium Acid Pyrophosphate refers to SAPP that is manufactured and tested according to food grade requirements. It should meet the required specification and impurity limits for food processing applications.
When purchasing food grade SAPP, buyers should confirm:
- Food grade compliance
- Product specification
- Assay and phosphate content
- pH value
- Reaction rate or application requirement
- Particle size requirement
- Heavy metal limits
- Fluoride and arsenic limits
- COA and MSDS availability
- Packaging, shelf life and storage conditions
- Destination market regulatory requirements
How to Choose Sodium Acid Pyrophosphate for Food Applications
The suitable SAPP product depends on the application. Bakery manufacturers, premix producers, food processors and distributors may have different requirements.
| Buyer Requirement | Selection Direction |
|---|---|
| Bakery and baking powder | Confirm leavening performance, reaction rate, pH and particle size |
| Potato products | Confirm color protection, texture requirement and local permitted use |
| Processed foods | Confirm pH control, stabilization need and formula compatibility |
| Import and distribution | Confirm specification, COA, MSDS, packaging and destination market requirements |
Related Product
- Sodium Acid Pyrophosphate SAPP / E450(i) – food grade SAPP for bakery, leavening systems, processed food and related applications.
Related Applications & Guides
- Types of Leavening Agents in Baking – understand how biological, chemical and physical leavening agents work in bakery applications.
- Emulsifier E450 Food Grade Diphosphates – learn E450 types, including SAPP / E450(i), and their food applications.
FAQ About Sodium Acid Pyrophosphate in Food
What is Sodium Acid Pyrophosphate used for in food?
Sodium Acid Pyrophosphate is used in food as a leavening acid, pH control agent, texture improver, chelating agent and processing stabilizer. It is especially common in bakery and baking powder systems.
Is SAPP the same as E450(i)?
Yes. Sodium Acid Pyrophosphate is commonly known as SAPP and is identified as E450(i) in the food additive system.
Is SAPP used in baking powder?
Yes. SAPP is widely used as an acid component in baking powder systems. It reacts with sodium bicarbonate to release carbon dioxide and helps baked goods rise.
What foods may use Sodium Acid Pyrophosphate?
SAPP may be used in bakery products, pancakes, waffles, biscuits, quick breads, processed potatoes, instant foods, sauces, dressings and selected processed foods depending on local regulations.
Is Sodium Acid Pyrophosphate natural?
SAPP is generally produced through a controlled chemical process. For food applications, buyers should focus on food grade compliance, purity, impurity limits and required documents.
What documents are available for food grade SAPP?
Common documents include COA, MSDS, specification sheet, food grade declaration, packing information and export documents depending on the order and destination market.
Can GJ Phosphate supply food grade Sodium Acid Pyrophosphate?
Yes. GJ Phosphate can supply food grade Sodium Acid Pyrophosphate SAPP / E450(i) for bakery, leavening systems and food processing applications. Specifications, COA/MSDS, sample support and quotation are available upon request.
Request Sodium Acid Pyrophosphate Quotation
Need food grade Sodium Acid Pyrophosphate SAPP / E450(i) for bakery, leavening systems or food processing?
Contact GJ Phosphate to get product specifications, COA/MSDS, sample support and quotation.
