NAME:Sodium Tripolyphosphate , STPP
H.S.Code:28353190.00
CAS Code:7758-29-4
MOLECULAR FORMULA:Na5P3O10
MOLECULAR WEIGHT:367.86
EXECUTIVE STANDARD:GB25566-2010
Sodium Tripolyphosphate , STPP
H.S. Code:28353190.00
CAS Code:7758-29-4
APPEARANCE:white powder ,white granular
MOLECULAR FORMULA: Na5P3O10
Application:Industrial grade: Used in detergent, synergist for soap; water softener; tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production.
Package:Packaged in 25/40/500/1000kg PP Woven sacks with plastic liners.or as per customer’s request.
Chemical properties:It is white powder or white granular;its apparent density is 0.35-0.90 g/cm3. 1% aqueous solution’s PH is 9.7; Melting point is 622°C;It has salient chelating capacity to ions of Ca, Mg etc; It can soften the hard water to make suspension become into the clear solution; it has weak alkalinity but no corrosiveness. It is a surfactant which has outstanding emulsification for lubricants and fat
ITEM | Index | ||
SUPERIOR | FIRST CLASS | QUALIFIED | |
(Na5P3O10) %≥ | 96 | 90 | 85 |
(P2O5) %≥ | 57 | 56.5 | 55 |
Insolubles ≤ | 0.1 | 0.1 | 0.15 |
(Fe) %≤ | 0.007 | 0.015 | 0.3 |
PH % | 9.2-10.0 | ||
Whiteness≥ | 90 | 80 | 70 |
Granularity ≤ | 5 |