Tetrapotassium Pyrophosphate
Molecular Formula: K4P2O7.
Molecular Weight : 330.34
Appearance: while powder or granulars,Dissolve in water and non-disslove in alcohol.
Easy absorb moisture in air.
Usage: Mainly used in plating without cyanide and bleaching leather products act as stabilizer also adopted in detergent industry .Under two special conditions,Potassium Pyrophosphate must be utilized.First for heavy-dirt detergent in controlling foam,secondly for cleaning metal surface.
TKPP can also be used in fertilizer industry.
Description |
Export grade |
superfine grade |
Food grade |
Purity
( K4P2O7) |
96% Min |
98%Min |
98%~101% |
Cl content |
0.45%Max |
0.45%max |
0.011%Max |
Fe content |
0.005%Max |
0.005% or 0.0015% Max |
10ppm Max |
P2O5 |
41.2%Min |
42.27%Min |
42.2%min |
Water Insol |
0.08%Max |
0.05%Max |
0.05%Max |
PO43- |
no sunk yellowly titrated with 0.1NAgNO3 |
Pbit |
0.01%max |
0.005%Max |
20ppm Max |
Loss on burning |
1% Max |
0.8%Max |
0.8%Max |
Appearance |
White powder or white granulars |
White powder |
SO4 |
|
|
0.019% |
F content |
|
|
10ppm Max |
As content |
|
|
3ppm Max |
PH |
10.0~10.7 |
|
state of the aqueous |
Colourless |
|
