Regrettably, there is no chemical substance with the formula Cr2O3SO2. This is not a valid chemical formula.
In fact, Cr2O3 and SO2 are two different substances. Cr2O3 is an oxide of chromium, also known as Chromium (III) Oxide, or Chromium Trioxide. It is a solid that ranges from blue-green to blackish green, insoluble in water and non-oxidizing acids. Cr2O3 is mainly used in the paint and ceramic color industries.
SO2, or Sulfite, is a colorless gas with a smoky smell. It is a reactive gas and can combine with water to form strong sulfuric acid.
Both of these substances can be synthesized through different chemical reactions. However, it should be noted that the combination of these two substances does not create a new chemical substance with the formula Cr2O3SO2.
Please check your chemical formula again to make sure it is correct.