Iron oxide pigments are a type of pigment with good dispersibility, excellent light and weather resistance. They primarily refer to four types of colored pigments: iron oxide red, iron yellow, iron black, and iron brown, which are based on iron oxides, with iron oxide red being the most predominant (accounting for about 50% of iron oxide pigments). Mica iron oxide, used as rust-proof pigment, and magnetic iron oxide, used for magnetic recording materials, also fall under the category of iron oxide pigments. Over 70% of the consumed iron oxide pigments are produced through chemical synthesis, known as synthetic iron oxide. Synthetic iron oxide is favored for its high synthetic purity, uniform particle size, broad color spectrum, variety of colors, affordability, and non-toxicity, offering excellent coloring and application properties, along with the ability to absorb ultraviolet rays. As a result, it is widely used in construction materials, coatings, plastics, electronics, tobacco, rubber, ceramics, inks, magnetic materials, and papermaking industries.