Sodium Pyrophosphate (Food Grade) CAS#7722-88-5
High Solubility: Sodium pyrophosphate owns excellent water solubility, easily soluble in cold and hot water, insoluble in ethanol and other organic solvents, convenient to prepare mixed solution for food processing production.
Stable pH: Its aqueous solution is weakly alkaline with stable pH value, it keeps stable property under normal temperature, and will hydrolyze gradually in long-term acidic environment.
Versatile Uses: It is widely used as water retention agent, tenderizer, emulsifier and buffering agent in food industry, improving food taste, texture and fresh-keeping effect.
Crystalline Form & Hygroscopic Nature: This product is white crystalline powder or granular, odorless, non-toxic and food-safe grade, with slight hygroscopicity, easy to weigh, pack and store.
Sodium pyrophosphate, characterized by the molecular formula Na₄P₂O₇, appears as white odorless crystalline solid, featuring strong metal ion chelating ability, good dispersion and water retention performance. It conforms to international food additive standards, with mild property and high safety for food production application.
Sodium Pyrophosphate Chemical Properties
| Property | Value |
|---|---|
| Melting point | 880 °C (lit.) |
| Density | 2.53 g/cm³ |
| Vapor density | Not applicable |
| Refractive index | 1.475 |
| Storage temp | Store below +30°C, sealed dry place |
| Solubility | Freely soluble in water, insoluble in ethanol |
| Form | Crystalline powder / Granular |
| Color | Pure white |
| Odor | Odorless |
| PH Range | 9.9-10.7 at 100 g/l |
| PH | 9.9-10.7 (100g/l, H₂O, 20℃) |
| Water Solubility | 620 g/L (25 ℃) |
| Sensitive | Slightly hygroscopic |
| Merck | 14,8731 |
| BRN | Not available |
| Stability | Stable at room temperature, easy to hydrolyze in strong acid |
| InChIKey | FPIPFFBWFZJCDP-UHFFFAOYSA-L |
| CAS DataBase Reference | 7722-88-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium pyrophosphate(7722-88-5) |
| EPA Substance Registry System | Tetrasodium diphosphate (7722-88-5) |
Safety Information
| Item | Value |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | UX1450000 |
| F | Non-flammable |
| TSCA | Yes |
| HS Code | 2835321000 |
This compound is mainly used in food industry for meat products, seafood, frozen food, bakery products and dairy products, acting as water retention agent, meat tenderizer, quality improver and buffering agent. It can effectively chelate metal ions, prevent food discoloration and prolong shelf life. Meanwhile, it is also widely used in daily chemical detergent, water treatment softener, electroplating industry, ceramic additives and printing and dyeing auxiliaries.
