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Chromium (III) oxide (Cr2O3) is a solid material consisting of light to dark green, fine crystals. The melting point and boiling point are 2,435°Cand 4,000°C, respectively. Chromium (III) oxide is virtually insoluble in water and it does not transform to its (VI) higher oxidation state in water. The substance has a density of 5.22 g/cm³.

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