Sodium Tripolyphosphate (STPP; TPP) Triphosphoric acid
Technical Specification: GB9983-2004
Item |
Index |
Excellent |
I Grade |
Acceptable |
Na5P3O10 %≥ |
96 |
90 |
85 |
P2O5 %≥ |
57.0 |
56.5 |
55.0 |
Water Insoluble Content %≤ |
0.10 |
0.10 |
0.15 |
Fe %≤ |
0.007 |
0.015 |
0.30 |
pH Value |
9.2-10.0 |
Whiteness %≥ |
90 |
80 |
70 |
Fineness (1.00mm Sieve Reside)% ≤ |
5.0 |
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
Properties:White granular or powder, Shown density: 0.35-0.9g/cm3, melting point 622. Very in water easily, The aqueous solution is characteristically basic.The pH value of 1% solution ranges from 9.2 to 10.0.
Applications: STPP is a solid inorganic compound used in a large variety of household cleaning products,mainly as a builder, but also in human foodstuffs,animal feeds, industrial cleaning processes and ceramics manufacture,STPPis widely used in regular and compact laundry detergents and automatic dishwashing detergents (in powder ,liquid,gel and /or tablet form),toilet cleaners,surface cleaners, and coffee urn cleaners, It also 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.
Package: 50kg in plastic woven bag with polythene liner
