Disodium Phosphate Food Grade
Food-grade Disodium Phosphate (DSP, CAS 7558-79-4, E339(ii)), ≥98.0%, supplied wholesale by Zyntex. Emulsifying salt for processed cheese, buffer for food and pharma, and component of laboratory buffers. CoA and SDS.
Description
Disodium Phosphate Product Overview
Disodium phosphate (Na2HPO4) is a white, hygroscopic powder or granule that dissolves well in water and gives a mildly alkaline solution. Producers make it by neutralizing Phosphoric acid with sodium hydroxide or soda ash. It is also available in hydrated forms. In food, it carries the E number E339(ii).
In processed cheese and cheese sauces, it works as an emulsifying salt that keeps fat and protein together and gives a smooth melt. It also stabilizes evaporated milk and cream, regulates acidity in beverages and instant products, and improves texture in meat products alongside Sodium Tripolyphosphate.
Pharmaceutical companies use it as a buffering agent, and laboratories use it in phosphate-buffered saline (PBS) and other buffers. It also appears in water treatment and detergent formulations. For citrate-based buffers and emulsifying salts, see Sodium Citrate.
Key Applications of Disodium Phosphate
Main application areas:
🧀 Dairy
Emulsifying salt in processed cheese and stabilizer in milk products.
🥤 Food and Beverages
Acidity regulator and buffer (E339).
💊 Pharmaceuticals
Buffering agent in formulations.
🔬 Laboratory
Component of PBS and phosphate buffers.
Disodium Phosphate Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Disodium Phosphate Food Grade |
| CAS Number | 7558-79-4 |
| EC Number | 231-448-7 |
| E Number | E339(ii) |
| Molecular Formula / Weight | Na2HPO4 / 141.96 g/mol |
| Assay / Purity (Na2HPO4) | ≥ 98.0% (On Dried Basis) |
| Appearance | White hygroscopic powder or granular matrix |
| Arsenic (As) | ≤ 3 ppm |
| Heavy Metals (as Pb) | ≤ 10 ppm |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: Not classified as hazardous under GHS, although dust may irritate the eyes. Store in tightly closed bags in a dry place, as the anhydrous form absorbs moisture and may cake. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Frequently Asked Questions
Why is disodium phosphate used in processed cheese?
It acts as an emulsifying salt: it binds calcium, which allows the cheese proteins to keep fat and water together and produces a smooth, meltable product.
Do you supply hydrated forms?
This product is the anhydrous form. Dihydrate, heptahydrate and dodecahydrate can be quoted on request.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.
