What is Sodium Tri poly phosphate (STPP)?
It is an inorganic compound with formula Na5P3O10. It is the sodium salt of the polyphosphate penta-anion, easily soluble in water but not in organic solution. Its water solution is alkaline
- Water softening agent
- Cleaning agent in electroplating
|Iron (Fe)||0.008 %|
|Water Insoluble matter||0.03%|
|pH Value (1% Solution)||9.4|