Sodium Tripolyphosphate : 1.STPP Content: 94%min 2.P2O5: 57%min 3.Whiteness:90%min 1.Specifications: ItemsSpecificationsNa5P3O1094%minP2O557%minInsolubles in water0.1%maxFe0.005%maxPh (1% solution)9.2-10.2Whiteness90%min2 Package:Packing: 25kg 50kg/bag , 1000kg/bag3. Usage:Auxiliaries for synthetic detergent, synergist for soap;water softener,tanning agent for leather making,auxiliary for dyeing; ...