The electrical properties of titania and its compounds indicate the suitability of these materials not only as substitutes for condenser grade mica but also for a number of other electrical applications where it is not possible or convenient to use other dielectrics. Such widespread application is possible through the variables that can be introduced in a synthetically prepared product. The electrical properties of some of these materials, their compositions, methods of manufacture, and commercial application, are described. An attempt is made to explain on a rational basis the reason for obtention of the electrical properties involved and particularly the effect of various additions. Correlations between this explanation and experiment are given.