Sodium Tripolyphosphate (Food Grade) CAS#7758-29-4
High Solubility: Sodium tripolyphosphate owns excellent water solubility, freely soluble in cold and hot water, insoluble in ethanol and other organic solvents, easy to prepare uniform aqueous solution for food processing compounding.
Stable pH: Its aqueous solution presents mild alkalinity with stable pH value, maintains good stability under normal temperature and moderate heating condition, and has slow hydrolysis speed in neutral and alkaline environment.
Versatile Uses: It is widely applied as water retention agent, chelating agent, tenderizer and emulsifier in food industry, effectively improving food taste and extending shelf life.
Crystalline Form & Hygroscopic Nature: This product appears as white crystalline powder or granular solid with slight hygroscopicity, odorless and food safety grade, convenient for accurate weighing, packaging and warehouse storage management.Sodium tripolyphosphate, characterized by the molecular formula Na₅P₃O₁₀, presents as white odorless crystalline solid that meets food additive safety standards. It has strong metal ion chelating capacity, good dispersion property and excellent water holding performance. It features stable chemical property, low irritation and high safety, which fully conforms to national and international food grade use specifications.
Sodium Tripolyphosphate Chemical Properties
| Property | Value |
|---|---|
| Melting point | 622 °C (lit.) |
| Density | 2.52 g/cm³ |
| Vapor density | Not applicable |
| Refractive index | 1.478 |
| Storage temp | Store below +30°C, sealed and dry environment |
| Solubility | Freely soluble in water, insoluble in ethanol |
| Form | Crystalline powder / Granular |
| Color | Pure white |
| Odor | Odorless |
| PH Range | 9.2-10.1 at 100 g/l |
| PH | 9.2-10.1 (100g/l, H₂O, 20℃) |
| Water Solubility | 150 g/L (25 ºC) |
| Sensitive | Slightly hygroscopic |
| Merck | 14,8726 |
| BRN | Not available |
| Stability | Stable. Incompatible with strong acids, easy to hydrolyze in acidic solution |
| InChIKey | KUNVHWYFUHGITF-UHFFFAOYSA-I |
| CAS DataBase Reference | 7758-29-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium tripolyphosphate(7758-29-4) |
| EPA Substance Registry System | Pentasodium triphosphate (7758-29-4) |
Safety Information
| Item | Value |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | YK4570000 |
| F | Non-flammable |
| TSCA | Yes |
| HS Code | 2835311000 |
This compound is commonly used as food-grade water retaining agent for meat products, seafood and frozen food, also used as food emulsifier, quality improver and softener. It can chelate metal ions to prevent food discoloration and deterioration. In addition, it is widely used in detergent industry, ceramic industry, water treatment agent, industrial dispersant and textile printing and dyeing auxiliary agent, covering multiple civilian and industrial application fields.
