Iron Oxide Black Iron Oxide Black： Magnetic Iron Oxide;Magnet
SF325
SF400
SF500
SF600
SF800
Fe3O4 Content ≥%
80-90
Water, ≤%
0.5
Water-Soluble Matter, ≤%
1
Sieve residue (325 Mesh)%
0.3
0.7
2
3
Oil Absorption (ml/100g)
12-18
15-25
pH
5-8
105 ℃ Volatile Content
Molecular formular: Fe3O4 Molecular Weight: 231.53
Properties : Black or black red powder，insoluble in water, alcohol; soluble in concentrated acid, hot strong acids, Melting Point:1594℃, Relative Density：5.18
Applications：It is widely applied to color of building material, water color, greasepaint, applied to making alnico in electronics and telecommunication, and applied to steel defect detection in battery and mechanical industry.
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