Potassium tripolyphosphate
General Product Information
| Article | Potassium tripolyphosphate |
| Synonyms | Potassium triphosphate, Potassium phosphate, Pentapotassium triphosphate, Pentapotassium tripolyphosphate |
| CAS No. | 13845-36-8 |
| EEG No. | – |
| EINECS No. | 237-574-9 |
| IMO | – |
| Tariff Code | 31056010 |
| UN No. | – |
| VLG/ADR | – |
Description
Potassium tripolyphosphate, also known by the chemical name pentakalium tripolyphosphate, is an inorganic phosphate salt. It is a white, crystalline powder that is Highly soluble in water and has an alkaline pH. It is widely used in the food industry as well as in industrial and technical applications. For the commercial market, the product is of particular interest because of its versatile functional properties, such as complexing ability, dispersing effect and pH buffering effect.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Taste: –
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | K5P3O10 |
| Molar Weight | 448.42 g/mol |
| Melting Point | Approx. 620 °C. |
| Boiling Point | – |
| Density | – |
| Refractive Index | – |
| pH. | Approx. 9.5 (on 1% solution). |
Applications
In Technical Applications, potassium tripolyphosphate is used in detergents and cleaners as a water softener and dispersant. In Metalworking, it acts as a corrosion inhibitor. Furthermore, it is used in ceramics, Water Treatment, latex paints and in the oil industry as an auxiliary agent at drilling operations.
Interessing Links
- CAS Common Chemistry – Potassium tripolyphosphate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Pentapotassium Triphosphate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).