Iron oxide brown is usually made of iron oxide yellow, iron oxide red and iron oxide black.
Iron brown blended products have the characteristics of iron oxide red and iron oxide yellow, iron brown also has the main characteristics of large color range and strong adaptability, brown powder. Insoluble in water, alcohol, ether, soluble in hot strong acid. High tinting strength and hiding power. Good light resistance and alkali resistance. Anhydrous permeability and oil permeability. The hue varies with the process, including yellow-brown, red-brown, black-brown, etc.