Sodium tripolyphosphate 0AQ
General Product Information
| Article | Sodium tripolyphosphate 0AQ |
| Synoniemen | Sodium triphosphate, Pentasodium triphosphate, Sodium tripolyphosphate anhydrate, STPP |
| CAS No. | 7758-29-4 |
| EEG No. | – |
| EINECS No. | 231-838-7 |
| IMO | – |
| Tariff Code | 28353100 |
| UN No. | – |
| VLG/ADR | – |
Description
Sodium tripolyphosphate is an inorganic sodium salt of the triphosphoric acid. It is widely used in industrial because of its properties as a water softener, emulsifier and stabilizer. It is a white, crystalline powder that is highly soluble in water.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Food.
- Solubility: Highly soluble in water.
- Taste: –
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | Na5P3O10 |
| Molar Weight | 367.86 g/mol |
| Melting Point | Approx. 600 °C (decomposes). |
| Boiling Point | – |
| Density | Approx. 2.5 g/cm³. |
| Refractive Index | – |
| pH | Approx. 9.2-10.2 (on 1% solution). |
Applications
Sodium tripolyphosphate is applied in various ways, for instance:
1. Water Treatment
NTPP prevents corrosion and scale formation in industrial water circuits and boilers. It attenuates the chemical stability of water.
2. Cleaning Products Industry
In detergents and cleaners, NTPP is used for its water-softening and emulsifying properties. It increases the efficiency of detergents and prevents scale formation.
3. Other Sectors
In ceramics and Textile Industry as a dispersant; In paper and leather processing; and in Cosmetics, such as toothpaste and shampoos.
Interessing Links
- CAS Common Chemistry – Sodium tripolyphosphate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Pentasodium Triphosphate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium triphosphate