What is a black iron oxide pigment

Iron oxide black pigment called iron black, iron oxide chemical name thirty-four belonging spinel. It has saturated blue light black ink, the relative density of 4.73, opacity and color strength are high, the role of light and atmosphere is very stable, alkali-insoluble, slightly soluble in dilute acid, is completely dissolved in concentrated acid, poor heat resistance at a higher temperature is easily oxidized, production of red iron oxide.

Black iron oxide pigments because of this high tinting strength, good lightfastness and paints used in the coatings industry, but also due to the alkali-resistant, energy and cement is widely used in the construction industry cement coloring. In addition, ink, printing, plastics coloring, polishing and metal detection, etc. are also used.