Cobalt chloride is used as a humidity indicator in weather instruments. It finds use in electroplating of cobalt, in invisible ink, in organic chemistry and is a precursor to cobaltocene(bis (cyclopentadienyl) cobalt(II)).

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.