| Potassium pyrophosphate(TKPP) |
 Molecular formula of anhydrous matter:K4P2O7
Molecular weight:330.34
Properties:White powder or block, apparent Sg 0.3 MIN, Melting point 1100°C, Soluble in water, insoluble in ethanol, solution
is basic liquid. Solubility(25°C: 187g/100g water).
Uses: Mainly used in cyanogen-free electroplating.It also can be used as ingredient and additive in all kinds of detergents and
cleaning agent, as clay dispersant in ceramic industry. Oe used in pre-treatment agent of plating and diphosphoric acid plating
liquid.
Packing: plastic lined woven bag, Net wt 50 Kg.
Technical index
NO. |
Index name |
Industrial grade |
Food grade |
1 |
Main content (K4P2O7) %= |
95.0 |
95.0 |
2 |
? (Fe2+ Fe3+) %= |
0.05 |
0.05 |
3 |
Water insoluble matter %= |
0.20 |
0.1 |
4 |
PH value (2% solution) %= |
10.3-10.9 |
10.5 |
5 |
Pb %= |
0.01 |
0.000005 |
6 |
Heavy metals %= |
___ |
0.00002 |
7 |
F %= |
___ |
0.00001 |
8 |
As %= |
___ |
0.000003 |
|
