... %min, 3.White odorless powder 4.Over 50 years factory Sodium Tripolyphosphate (STPP) 94%minSpecificationIndustrial grade Food grade Main content, %,≥ ... Chloride, as Cl %≤---0.0251. Product Description:1).Product: STPP; Sodium Tripolyphosphate 2).Chemical formula: Na5P3O103).Standard executed: HG/T2837-1997 ... bag with polythene liner; Stored in ventilated and dry place. Sodium Tripolyphosphate 94% min