Cas 7775-11-3

 Used in the preparation of other chromium compounds, such as sodium dichromate, chromic anhydride, potassium chromate, and chromium trioxide, for applications in analytical chemistry, high-temperature pigments, electroplating, and oxidising agents.

 Employed in metal surface treatment, including as a passivating agent for steel and for surface oxidation treatment of aluminium alloys, and also serves as an additive in electroplating solutions.

 Employed as a preservative for timber and as a bleaching agent and delignifying agent in the papermaking industry (requiring controlled dosage).

 Serves as a raw material for preparing chromium-based pigments, including chrome yellow, zinc chrome yellow, and dark chromium pigments (e.g., chrome green).

 Employed in small quantities for industrial wastewater treatment to remove heavy metal ions, though strict control of residual levels is essential;

 Used as a titrant or indicator for detecting barium ions, lead ions, and similar elements in water;

 Serves as a catalyst or co-catalyst in certain organic synthesis reactions (e.g., oxidation processes).