Iron oxide as pigment 2, iron oxide is commonly used in glass production coloring agent. Glass colored with iron oxide can absorb both ultraviolet and infrared rays, so it is widely used in the manufacture of heat-absorbing glass, sunglasses glass, industrial protective glass, military anti-infrared coating. It also has the function of low cost, absorbing hot wire and ultraviolet rays.

Globally, iron oxide pigments are widely used as colorants and protectants for wood coatings. The use of transparent iron oxide pigments instead of traditional pigments preserves clear wood grain and its high light resistance keeps the color of furniture unchanged. Ultraviolet rays from sunlight decompose lignin and damage the cell structure of wood, leading to wood aging. Iron oxide nanopigment can protect wood because of its fine and uniformly distributed particles, which do not scatter light and absorb ultraviolet rays.