... for synthetic detergent 2,Synergist for soap 3,Water softenerUsed as one of the main auxiliaries for ... synthetic detergent, synergist for soap, water softner, tanning agent for leather making, auxiliary for ... : 94%minP2O5 : 57%minFe : 0.002%maxInsoluble in Water : 0.1%maxPH (1 Solution) :9.8-10. ... .1%max Package : 25KG EXPORT STANDARD PACKING Sodium Tripolyphosphate (STPP)