Specification | Tech Grade | Food Grade |
Appearance | White powder | White powder |
Assay | 98.0% Min | 98.0% Min |
Water insoluble | 0.2% Max | 0.1% Max |
pH (1% water solution ) | 10-11 | 10-11 |
Heavy Metal(Pb) | 0.003% Max | 0.001% Max |
Iron (as Fe) | 0.001% Max | 0.001% Max |
Arsenic(as As) | 0.005% Max | 0.0003% Max |
Product name | Potassium pyrophosphate |
Synonyms | Potassium diphosphate; Tetrapotassium pyrophosphate |
CAS | 7320-34-5 |
Molecular Formula | K4P2O7 |
Molecular Weight | 330.33 |
EINECS | 230-785-7 |
Appearance | White powder |
Assay | 99%min |
1. Mainly used for cyanide-free electroplating, instead of sodium cyanide as a complexing agent for electroplating. It is also used as a pretreatment agent for electroplating and a pyrophosphoric acid electroplating solution. Metal surface cleaners, additives for various cleaners. It is used as a clay dispersant in the ceramic industry, a dispersant and a buffer for pigments and dyes.