Chrome oxide green also known as chromium oxide, chromium oxide with molecular weight of 151.99. It is Hexagonal green powder with Density of 5.21g / cm3, Mohs hardness of 8.5 to 9, which is close to the corundum (Al2O3), second only to diamond, and more than quartz SiO2, topaz Al2 [SiO4] (F, OH) 2 and zircon ZrSiO4).
Features and Application:
The refractive index is 2.5 (cover rate is good), specific heat capacity (20 ℃) /0.17J/ (g · K). Insoluble in water, acid and organic solvents, slightly soluble in concentrated sodium hydroxide solution, soluble in hot sodium bromide solution, hot concentrated perchloric acid solution or boiling parathion mixed acid.
Chrome oxide green is very stable in light, air and corrosive gas (H2S, SO2, etc.), excellent weatherability. Good thermal stability, melting point: 2265 ℃, boiling point: 3000 ℃, it is a high-quality refractory materials
Chromium oxide is mainly used in metallurgy, paint, polishing, refractory materials and newly developed meltblown paint.
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