It is used in testing for perchloric acid in laboratories, and is a source of rubidium. Rubidium chloride is used as a catalyst and additive in petrol. It has been employed to prepare molecular nanowires for nanoscale devices. Thin layer of rubidium chloride enhance the attributes of organic light-emitting diodes. Rubidium chloride also plays an essential role for enhancement in the memory storage property. It is an excellent non-invasive biomarker, and used in biomedical research.

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.