Iron oxide black
Description
A brownish-black iron ore. Black iron oxide is used in the manufacture of steel, glass and enamels. It has coarse particles that are strongly magnetic. Black iron oxide wets easily but it covers poorly and is unsuited for most use in paints. However, it is used to tint primers gray because it is inert and inexpensive.
Synonyms and Related Terms
ferrous oxide; Pigment Black 11; CI 77499; negro de óxido de hierro (Esp.); Schwarzes Eisenoxid, natürlich (Deut.); magnétite (Fr.); oxeidio toy sidiroy (Gr.); mayro (fysiko) magnititis (Gr.); nero ossido di ferro (It.); ijzeroxide zwart (Ned.); negro de óxido de ferro (Port.); black iron oxide; magnetic oxide; Mars black; mineral black; black rouge.
Risks
No significant hazards unless contaminated with toxic impurities.
Physical and Chemical Properties
Turns a dark reddish brown when heated.
Composition = FeO