DESCRIPTION
SODIUM TRIPOLYPHOSPHATE (STPP), with formula Na5P3O10, is a polyphosphate of sodium. It is the sodium
salt of triphosphoric acid.
APPLICATION
STPP provides a number of chemical functions including sequestration of water hardness; enabling
surfactants to function effectively; pH buffering; dirt emulsification and prevention of deposition; hydrolysis
of grease; and dissolving-dispersing dirt particles.
TYPICAL PROPERTIES
- Purity (Na5P3O10) 94% min
- P2O5 57% max
- Water Insoluble matter 0.15% max
- Fe (Iron content) 0.015% max
- PH value (1% of solution) 9.5
- Whiteness 90% min
- Residue on 1.00 mm sieve 2% max
- Sodium Nitrite 0.003% max
- Density 0.35 - 0.90 (g/cc)
