Lanthanum acetate hydrate

Lanthanum acetate hydrate (CAS 100587-90-4) is a water-soluble lanthanum(III) salt with the general formula La(CH₃COO)₃·xH₂O, belonging to the rare earth elements (REE) category. Related forms include the sesquihydrate (CAS 25721-92-0), the anhydrous salt (CAS 917-70-4), and aqueous solution grades.

Where is Lanthanum acetate hydrate used?

• Catalysis: precision impregnation precursor for lanthanum-doped mixed-oxide catalysts
• Electronics and solar PV: sol-gel precursor and starting material for perovskite-structured ceramic electrodes such as LSM and LSCF in solid-oxide fuel cells
• Water and wastewater treatment: active ingredient precursor in phosphate-sequestration formulations for removal of dissolved orthophosphate from effluent
• The acetate route offers controlled hydrolysis kinetics and homogeneous cation distribution in thin-film and coating processes.

Good to know: No established USP, Ph. Eur., or food-grade monograph applies; all commercial grades are for industrial and research use only. Buyers should evaluate suitability for their specific regulatory and process requirements independently.

Commercial specifications

• Purity grades 3N to 4N on a rare earth oxide basis
• La₂O₃/TREO typically ≥ 99.9 %
• TREO approximately 40–45 % in the hydrated salt
• Lot sizes 1–25 kg; 1–5 kg sealed containers under inert or controlled-humidity conditions; 25 kg palletised pails or fibre drums