Item Iron oxide red 130 Iron oxide red 190 Iron oxide brown 610 Iron oxide black 780 Iron oxide yellow 313 Iron oxide blue Fe2o3/fe3o4í²% 96 95 92 93 86 105ípc moisture ín% 1.0 1.0 1.0 1.0 1.0 1.0 Water soluble salts ín% 0.3 0.3 0.5 0.5 0.3 0.5 Residue on 45um ín% 0.2 0.20 0.30 0.3 0.3 0.3 Ph-value 3.5-8 3.5-8 4-7 5-8 3.5-7 Oil absorption 15-25 15-25 20-30 12-25 25-35 Tinting strength % 95-105 95-105 95-105 95-105 95-105 95-105 Density approx / cm3 5.0-5.1 5.0-5.1 4.8 4.5-5.0 4.0-4.3 Packing 25kg net bag, 23mt in 20í»fcl