Items Iron Oxide Red 130 Iron Oxide Red 190 Iron Oxide Brown 610 Iron Oxide Black 780 Iron Oxide Yellow 313 Iron Oxide Blue Fe2O3/Fe3O4 min% 96 95 92 93 86 105°C Moisture max% 1.0 1.0 1.0 1.0 1.0 1.0 Water Soluble Saltsmax% 0.3 0.3 0.5 0.5 0.3 0.5 Residue on 45ummax% 0.2 0.2 0.3 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 4.5 4.5-5.0 4.0-4.3 -