An inorganic additive permanently marked by heavy stable isotopes and methods for its production

Abstract

The subject matter of the present invention is marked inorganic additives, a method for their production and also their use. The inorganic additive which is permanently marked by one or a plurality of heavy stable isotopes, whose content of the isotope used for marking or of the isotopes used for marking cannot be affected by heat treatment. The inorganic additive characterized in that it is a filler and / or pigment further characterized in that it is Tio2, ZnS or BaSO4 and isotopes are selected from one or a plurality of 2H, 13C, 15N, 18O and / or 34S. These additives can be applied in all fields of use for additives for example as pigments and / or fillers in the production and processing of plastics / polymer material, paints and lacquers, foodstuffs, pharmaceutical agents, cosmetic agents, paper, rubber, glass, feedstuffs and the likes.