Terbium(III,IV) oxide, occasionally called tetraterbium heptaoxide, has the formula Tb4O7.
T 1264 (OTTO) Terbium oxide, 99.999% Cas 12037-01-3 - used as a redox catalyst in reactions involving oxygen. T 1264 (OTTO) Terbium oxide, 99.999% Cas 12037-01-3 - used in the manufacture of glass, optical and ceramic.