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potassium pyrophosphate
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potassium pyrophosphate
Formula: K4P2O7
MW: 330.35
Quality: white powder or mass,specific gravity:2.534,M.P.:1109°C;Soluble in water,insoluble in ethanol and its aqueous solution is alkali .Solubility (25°C):187g/110g water;it has the same properties as other condensed phosphate.
Usage: mainly used as complexing agent in cyanogens-free electroplating, substituting for sodium cyanide. It also can be used as pretreating agent in electroplating and pyrophosphoric acid electroplating solution, as ingredient and additive in all kinds of detergengts and metal surface treating agent,as clay dispersant in ceramic industry,as dispersant and buffering agent in pigment and dyes,to remove a small amount of ferric ion from water in blanching and dyeing industry to improve quality.
Specifications | Industrial Grade | Food Grade |
Content %≥ | 96 | 96 |
Iron(Fe) %≤ | 0.01 | 0.01 |
Water Insoluble %≤ | 0.1 | 0.1 |
PH of(1% water solution) | 10-10.7 | 10-10.7 |
Arsenic(As) %≤ | ------ | 0.0003 |
Heavy metals(Pb) %≤ | 0.003 | 0.001 |
Orthophosphate | accord with regulation | Accord with regulation |
Appearance | white powder or mass | white powder or mass |
potassium pyrophosphate
