Used as a precursor in the synthesis of praseodymium-containing materials for catalytic applications, especially in automotive catalytic converters to reduce emissions. Employed in the production of specialty glasses and ceramics, where it imparts yellow-green color and improves refractive properties. Serves as a dopant in phosphors for display technologies and lighting. Utilized in research for developing magnetic materials due to its paramagnetic properties. Also applied in the preparation of other praseodymium salts and in electrochemical studies involving rare earth elements.