STPP You May Also Be Interested In: pentasodium triphosphate sodium triphosphate sodium tripolyphosphate stpp stpp synergist for soap
Sodium Tripolyphosphate
Synonym: Pentasodium Triphosphate; Pentasodium Tripolyphosphate; Sodium Phosphate Tripoly; Sodium Triphosphate; Sodium Tripolyphosphate; Stpp; Triphosphoric Acid, Pentasodium Salt
Formular: NA5O10P3 M. W. : 367.86413 CAS NO. : 7758-29-4 H. S. No. : 2835.3100
Description: white powder; melting point 6220C; easily soluble in water; it has got salient chelating capacity to ions of ca and mg etc. And can soften hard water to make suspension solution become into clear solution; it has got weak alkalinity but no corrosiveness. It is a surfactant, and has got outstanding emulsification to lubricants and fat. It has different bulk density, i. e. Low density 0.35-0.5g/cm3, medium density 0.51-0.65g/cm3 and high density 0.66-0.9g/cm3. this product has two crystalline forms, namely type i (high temperature type) and type ii (low temperature type) . The chemical properties of the two types are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving .
Grade: Tech Grade
NA5P3O10 94% min
P2O5 57.0% min
Water insoluble matter 0.15% max
Iron (Fe) 0.01% max
Ph value (1% water solution) 9.2-10.0
Particle size
through 16 mesh sieve
through 35 mesh sieve
trough 100 mesh sieve
Whiteness 90 max

Uses: used as one of the main auxiliaries for synthetic 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.
Packing: in 25kg net plastic woven bag; 22mt/1x20FCL