Pirofosforan tetrapotasu (TKPP) 99,9%

Tetrapotassium Pyrophosphate (TKPP) 99.9%
Other Names: TKPP, Diphosphoric acid, tetrapotassium salt; Potassium pyrophosphate; Potassium diphosphate
Note: Although designated as E450(V) for food use, this description is for technical and industrial applications only.

CAS Number: 7320-34-5
Sum Formula: K₄P₂O₇
Molar Mass: 330.34 g/mol
Appearance: White crystalline powder or granules

Tetrapotassium pyrophosphate (TKPP) is an inorganic salt of pyrophosphoric acid. It is highly soluble in water and functions as a chelating agent, dispersant, and buffer. It is used in technical processes involving surface treatment, water conditioning, detergents, and ceramics.

Chemical and Physical Properties

• Density: ~2.53 g/cm³

• Melting Point: ~1,100°C (decomposes)

• pH (1% solution): 10.2–10.7

• Solubility in Water: Highly soluble (~187 g/L at 25°C)

• Solubility in Other Solvents: Insoluble in alcohols and organic solvents

• Hygroscopicity: Slightly hygroscopic

Applications

• Water Treatment: Acts as a scale inhibitor and sequestering agent for hardness ions

• Detergent Formulations: Disperses dirt and stabilizes alkalinity in cleaning products

• Surface Treatment: Used in electroplating, metal cleaning, and industrial degreasing

• Ceramics and Pigments: Functions as a dispersing agent in clay and mineral slurries

• Industrial Cleaners: Enhances performance of alkaline cleaning systems

Safety

Signal Word: Warning

First Aid Measures

• Eye Contact: Rinse immediately with plenty of water for at least 15 minutes. Seek medical attention if irritation develops

• Skin Contact: Wash skin with soap and water. Remove contaminated clothing

• Inhalation: Move to fresh air. If symptoms persist, seek medical help

• Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical advice if unwell

Handling and Storage

• Storage Conditions: Store in a dry, cool, and well-ventilated place in tightly sealed containers. Protect from moisture

• Handling Precautions: Avoid contact with eyes and skin. Use suitable PPE and prevent dust formation