CAS No. 1309-37-1
Other Names Iron Oxide Red
EINECS No. 215-168-2
Appearance red power
Usage Cement color tile, paint, coating, ink, ceramics, rubber, plastics, le
Model Number 110 120 130 190
Iron Oxide Red Inorganic Pigment .
Color is steel or silver gray to black in some forms and red to brown in earthy forms. Sometimes tarnished with irredescent colors when in a hydrated form (called Turgite).
Luster is metallic or dull in earthy and oolitic forms.
Transparency: Crystals are opaque.
Crystal System is trigonal; bar 3 2/m
Crystal Habits include tabular crystals of varying thickness sometimes twinned, micaceous (specular), botryoidal and massive. also earthy or oolitic.
Cleavage is absent however there is a parting on two planes.
Fracture is uneven.
Hardness is 5 - 6
Specific Gravity is 5.3 (slightly above average for metallic minerals)
Streak is blood red to brownish red for earthy forms.
Purity(fe2o3):80.0% min
Moisture:0.30%max
Water soluble salt:0.50%max
Residue(45um):0.3%max
Tinting strength:95-105%
Ph of aqueous extract: 6.5-8.5
Volatiles at 105ípc:1.0%max .
iron oxide red 110, 101, 120, 130, 140, 160, 180, 190
iron oxide yellow 313, 313,490, 315, 586, 810
iron oxide black 722, 330, 740, 750
iron oxide brown 610, 663,686, 841
iron oxide orange 340, 960, 2040
Compound Ferric green 835, 5605
