Iron oxide red

IUPAC name Iron Oxide
Molecular formula Fe2O3 ?Fe3O4
appearance red/brown/black/yellow/blue powder
Item Red 130 Red 190 Brown 610 Black 780 Yellow313 Blue
Fe2O3/Fe3O4=% 96 95 92 93 86
105°C Moisture =% 1 1 1 1 1 1
Water soluble salts =% 0.3 0.3 0.5 0.5 0.3 0.5
Residue on 45um=% 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 4.8 4.5-5.0 4.0-4.3 _


Iron oxide red