... 2. Good chelating capacity 3. Soften hard water 4. detergent grade Sodium tripolyphosphate STPP ( SGS quality report before shipment)Properties: White powder, ... , and has got outstanding emulsification to lubricants and fat. Tech index: Indexes Industrial Grade Assay Na5P3O10 % ≥ 94P2 O 5 % ≥ 57Water ... bagStorage: keep in dry, cool, ventilated place. STPP(P2O5 ,Sodium tripolyphosphate detergent grade)