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Tetra Potassium Pyrophosphate
    Publish time 2025-06-20 13:21    
Tetra Potassium Pyrophosphate

Molecular formula: K4P2O7                                                                     Molecular Weight: 330.34

CAS No.: 7320-34-5                                                                                EINECS No.:230-785-7


Properties:

Tetra potassium phosphate Anhydrous is in white powder. Relative density 2.534g/cm3 when in  25℃,its solubility in water is 187g/100g water, and melting point 1109°C; highly hygroscopic, soluble in water but insoluble in ethanol; it can chelate with alkaline metals ions or heavy metal ions. 

Application: 
1. Industrial field: Cyanide-free electroplating: replaces highly toxic sodium cyanide as a complexing agent, producing smooth and durable coatings while reducing environmental pollution.

2.Detergents and cleaners: Chelates hard water ions to enhance cleaning efficiency in industrial/household cleaning products.

3.Dispersant: Improves material dispersion uniformity in ceramic, clay, latex, and pigment production.

4. Metal treatment: Forms protective surface films for rust prevention and metal processing.

5.Food field: As emulsifier, chelator, and quality improver, primarily enhancing food texture and shelf life.

Technical Specifications 

Inspection Item

Specification Standard

Assay ( K4P2O7)                ≥%

98.0

P2O5                                  ≥%

42.0

Heavy Metal(Pb )               ≤%

0.01

Water Insoluble Matter       ≤%

0.1

pH (10G/1L solution)

9.5-10.5

Fe                                       ≤%

0.005

As                                       ≤%

0.001

Loss on Ignition                  ≤%

1.0

Complexing ability              ≥%

2.9

Appearance

White powder



















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