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Introduction to Chromic Anhydride and Chromic Acid

Chromic acid (CrO₈), also known as chromium trioxide or chromic anhydride, is a red-brown crystalline substance in the form of flakes. It has a melting point of 197°C and is highly hygroscopic. Due to its strong oxidizing properties, it is highly corrosive and toxic, capable of corroding skin. When chromic anhydride is dissolved in water, it can form chromic acid (H₂CrO₄) or dichromic acid (H₂Cr₂O₇).