Aluminum tripolyphosphate1.Aluminium tripolyphosphate is superior to such antirust pigments as lead red, zinc chrome yellow and zinc phosphate in rust prevention and practicality. 2.Aluminum tripolyphosphate chemical examination report: ProjectGuaranteed Values Examination resultColorWhiteWhite powderThe PH value5.5-7.07Oil absorption g/100g25-35 %29Residue on sieve( 45um) ≤0.5 %0.4Moisture %≤1.50.9P2O5 %35-4035.8Al2O3 %12-1817SiO2 %8-129.3