The production of inorganic pigments is mainly concentrated in Germany, France, Italy, the United Kingdom, Spain, Russia, the United States, Japan and China. The production of inorganic pigments in China has grown rapidly, and the output of some products has already ranked first in the world.

When inorganic pigments and organic pigments are used as pigments, they have different physical and chemical properties due to the large difference in molecular structure. Compared with organic pigments, most inorganic pigments have simpler production process, lower cost and lower selling price; at the same time, they have better mechanical strength and thermal stability, and can be applied to paint, ink, plastic, glass, ceramics, enamel and system coloring with special requirements; Various systems have good dispersibility and covering power, and most varieties have excellent solvent resistance and durability; however, low tinting strength, darker color, narrow chromatogram, and some high toxicity limit to some extent. use of inorganic pigments.

Chrome oxide green (chromic oxide), also known as enamel chrome green, its chemical composition is chromium oxide. 99。 Molecular formula Cr2O3, relative molecular mass 151.99. Chromium oxide green is a hexagonal or amorphous dark green powder with a chromium oxide (Cr2O3) content greater than 95%, with metallic luster. Insoluble in water and acid, soluble in hot alkali metal bromate solution. Its outstanding advantages are that it is extremely stable to light, atmosphere and corrosive gases (SO2, H2S, etc.), acid and alkali resistance, high temperature resistance up to 1000 ° C, and magnetic, but the color is not bright.

Chrome green has extremely high thermal and chemical stability, and can be used in the manufacture of high-temperature paints, as well as protective paints used in harsh chemical environments; it is also used as colorants for enamel and porcelain painting, artificial leather, and building materials; For the manufacture of lightfast coatings and abrasives, green polishing pastes and special inks for printing banknotes.