... Specifications1,Manufacturer of Sodium Tripolyphosphate (STPP) 2,Free sample 3,High quality and competitive price 4,Quickly deliveryProduct DescriptionProduct: Sodium Tripolyphosphate ( ... : White microdot powder with luster, melting point at 622 o C, easily soluble in water, with remarkable chelating ability to ... your special requirements for packing. Sodium Tripolyphosphate STPP 94% High quality