tantalum oxide

tantalum oxide

[′tant·əl·əm ′äk‚sīd] (inorganic chemistry) Ta2O5 Prisms insoluble in water and acids (except for hydrofluoric); melts at 1800°C; used to make tantalum, in optical glass and electronic equipment, and as a chemical intermediate. Also known as tantalic acid anhydride; tantalum pentoxide.