摘要:
Synthetic nacreous pigments comprise at least one thin plateshaped crystal having a length of 3 to 100 microns, a width of 1 to 40 microns and a thickness of 0.05 to 3 microns, said individual crystal being composed of one nucleic compound selected from the group consisting of nucleic bases, nucleosides and nucleotides. The pigments are non--toxic, have a strong resistance to chemicals, and thus are applicable to cosmetics or decoration of the surfaces of toys and tablewares, or food itself or improvement in the freshness of beverages.