T 1342 (OTTO) Tetrabutyl titanate, 97%+ Cas 5593-70-4 - used in the synthesis of nanocrystalline TiO2 powders. T 1342 (OTTO) Tetrabutyl titanate, 97%+ Cas 5593-70-4 - used in the preparation of nanosized titania powders in the anatase form and ferroelectric bismuth titanate thin films.