Tetra Potassium Pyrophosphate(TKPP)
Molecular formula: K4P2O7
Molecular weight: 330.34
Standard executed: HG/T3591-1999
CAS Number: 7320-34-5
Properties:
Anhydrous tetra potassium phosphate is in white powder or granular. Relative density 2.534 g/cm3 and melting point 1109�J; It is apt to absorb humidity in the open air to deliquescent; Soluble in water but insoluble in ethanol, and at 25�J,its solubility in water is 187g/100g water; It can chelate with alkaline metals ions or heavy metal ions.
Uses :
It mainly applied to electroplating without cyanate, industrial or household detergents; It can used as a buffering reagent as well as stabilizer for hydrogen peroxide; It can also be used as dispersion agent for ceramic, clay, latex and pigments etc.
Packing and storage:
I Packed in 25 Kg, 50 Kg or 1000 Kg net bags. It must be stored in places well ventilated and dry.

1 Appearance White powder or granular
2 Assay% ? 96.0
3 Iron(Fe) % ? 0.03
4 Water insoluble matter % ? 0.1
5 Heavy Metals(as Pb)% ? 0.001
6 Arsenic(As)% ? 0.0003
7 PH Value 10.0-10.7
8 Ortho Phosphate Pass test