Chrome Oxide Price

Chromium oxide green is also known as chromium oxide, chromium oxide, and has a molecular weight of 151.99. It is a hexagonal system with green powder. The density is 5.21g/cm3, the Mohs hardness is 8.5~9, which is close to corundum (Al2O3), which is second only to diamond, but exceeds quartz SiO2, topaz Al2[SiO4](F, OH)2 and zircon ZrSiO4). Refractive index of 2.5 (good coverage), specific heat capacity (20 ° C) / 0.17 J / (g · K). Do not dissolve in water, acid and organic solvents, slightly soluble in concentrated sodium hydroxide solution, soluble in hot sodium bromate solution, hot concentrated perchloric acid solution or boiling sulfur-phosphorus mixed acid. It is extremely stable to light, atmosphere, and corrosive gases (H2S, SO2, etc.) and has excellent weather resistance. It is stable to heat, has a melting point of 2265 ° C and a boiling point of 3000 ° C. It is a high quality refractory material. Chromium trioxide is mainly used in metallurgy, pigments, grinding and polishing, refractory materials, and newly developed meltblown coatings.