Iron Oxide RedPigment, colorants,antirust function. Appearance: Red,Yellow,Blue,Brown,Black,Green PowderIron oxide itemRed130Red190Brown610Black780Yellow313BlueFe2O3/Fe3O4>%9695929386105C Moisture <%111111Water soluble salts <%0.30.30.50.50.30.5Residue on 45um<%0.20.20.30.30.30.3PH-value3.5-83.5-84-75-83.5-7Oil absorption15-2515-2520-3012-2525-35Tinting strength %95-10595-10595-10595-10595-10595- ...