*5.2.6.1 Natural black oxide*

The composition of Fe2O3 is 94–95%. It is used in making paints for priming metal.

#### **Properties:**

• Oil absorption power is 10–15 kg of linseed oil per 100 kg of Pigment

*Structure and Properties of Dyes and Pigments DOI: http://dx.doi.org/10.5772/intechopen.97104*
