Used in research laboratories as a source of rubidium or chromium ions in chemical synthesis and spectroscopic studies. Employed in the preparation of specialty glasses and optical materials due to its unique electronic properties. Occasionally utilized in electrochemical applications and as a dopant in certain solid-state devices. Its distinct color and redox behavior make it suitable for use in educational demonstrations involving oxidation-reduction reactions. Handling requires caution due to the toxicity and potential carcinogenicity of hexavalent chromium compounds.