Used as a precursor in the synthesis of ytterbium-based materials for optical and electronic applications. Employed in research for developing luminescent compounds and phosphors, particularly in lighting and display technologies. Serves as a source of ytterbium ions in doping solid-state lasers and scintillators. Applied in scientific studies involving rare earth element behavior in aqueous systems due to its solubility and stability in water. Also utilized in the preparation of catalysts for organic transformations where lanthanide sulfates show activity.