tri potassium Phosphate anhydrous
| Formula | K3PO4 |
| Chemical formula | K3PO4*XH2O |
| Molar mass | 212.27 g/mol |
| CAS number | 7778-53-2 |
| HS Code | 28352510 |
| EC number | 231-826-1 |
| Storage | Store at 15 to 30 °C |
| SDS | available |
| Odour | odourless |
| Form | solid |
| Color | white |
| p H value | ~12 |
| Solubility in water | freely soluble |
| Assay | ≥ | 97.0 | % |
| Description | Conforms | ||
| Solubility | Conforms | ||
| Identification | Conforms | ||
| Heavy metals | ≤ | 0.003 | % |
| pH | 11.5 to 12.5 | ||
| Loss on ignition | ≤ | 23 | % |
| Floride | ≤ | 10 | ppm |
| Water insoluble substances | ≤ | 0.2 | % |
| Lead | ≤ | 4.0 | ppm |
| Arsenic | ≤ | 3.0 | ppm |
Tripotassium phosphate anhydrous is a white, crystalline inorganic salt commonly used as a buffering agent, emulsifier, and alkalizing agent in laboratory and pharmaceutical applications. It is highly soluble in water and forms strongly alkaline solutions.
🏭⚗️ Production
It is produced by neutralizing phosphoric acid with potassium hydroxide in controlled conditions, followed by evaporation and drying to obtain the anhydrous form. The product is purified to meet laboratory and pharmaceutical quality standards.
🔬 Properties
The chemical formula is K₃PO₄ with a molar mass of approximately 212.27 g/mol. It appears as a white odorless crystalline powder that dissolves readily in water, producing a strongly alkaline solution with a pH around 12-13. It is hygroscopic and should be stored in moisture-free conditions.
🧪 Applications
Tripotassium phosphate anhydrous is used in buffer solutions, pharmaceutical formulations, and as an alkalizing agent to maintain pH stability. It is also applied in food additives, detergents, and water treatment processes.
⚠️ Safety
This compound can cause irritation to skin, eyes, and respiratory tract upon exposure. Handling requires appropriate personal protective equipment such as gloves, goggles, and masks. It should be stored in a cool, dry place away from acids and incompatible materials to prevent moisture absorption and degradation.
