How does cobaltous chloride's moisture-sensitive color change affect its industrial applications?

How does cobaltous chloride's moisture-sensitive color change affect its industrial applications?
Cobaltous chloride exhibits a distinctive color transition: anhydrous CoCl2 is blue, while the hexahydrate CoCl2·6H2O is pink. This property makes it valuable as a humidity indicator in desiccants, moisture-detection labels, and water-sensitive packaging. The color change occurs through hydration when water molecules coordinate with the cobalt ion, a reversible reaction that can be used repeatedly. In laboratory settings, this visual cue helps researchers verify anhydrous conditions. Beyond indicating moisture, cobaltous chloride serves as a precursor for producing other cobalt compounds, catalysts, and in electroplating. Its dual role as both a functional chemical and a visual sensor adds niche demand that remains relatively stable even when broader cobalt markets fluctuate, offering some diversification for suppliers.