... the ornamental protection course ,carburization accessories. Copper Pyrophosphate Physicochemical Properties: Pale green powder. Dissolves in ... May have complex reaction with the potassium pyrophosphate, becoming water-soluble pyrophosphoric acid copper ... accessories. Specification: ItemsSpecial GradeAssay (Cu) ≥34.0Insoluble Matter in Potassium Pyrophosphate,% ≤0.1Sodium (Na) ,% ≤0.5Lead (Pb) ,% ...