Molecular Formula: K4P2O7
Molecular Weight: 330.34
Properties: Anhydrous material is a white powder. Relative density 2.3534 and melting point 1109°C; It is apt to absorb humidity in the open air to deliquescent; Soluble in water but insoluble in ethanol, and at 25℃ its solubility in water is 187g/10
Uses: Mainly applied to electroplating without cyanide, industrial or household detergents; It can used as a buffering reagent as well as stabilizer for hydrogen peroxide; also be used as dispersion agent for ceramic, clay, latex and pigments etc.
Packing and storage: 25Kg, 50Kg bags, stored in draughty, dry and clean place, avoid moisture.
Standard executed: Reference standard
Item |
Super Grade |
1st Grade |
Food Grade |
Appearance |
White powder or granules |
Tetra Potassium Pyrophosphate, % ≥ |
96.0 |
95.0 |
96.0 |
Iron (Fe), % ≤ |
0.03 |
0.05 |
0.03 |
Water insoluble, %≤ |
0.1 |
0.2 |
0.1 |
Heavy metal(as Pb), %≤ |
-- |
0.001 |
Arsenic(As), %≤ |
-- |
0.0003 |
pH, |
10.0-10.7 |
Ortho Phosphates, |
Pass test |
|