[General and specific aspects of the toxic properties of nanoparticles and other chemical substances in the context of classical toxicology].

The properties of nanoparticles versus chemical compounds in other physical forms were evaluated in the context of classical toxicology. A relationship of the toxicity of nanomaterials to the structure of molecules and the size of nanoparticles is discussed. Summing up the data available in the literature leads to the conclusion that there are general and specific aspects in the study of the toxicity of nanoparticles and chemical substances in other physical forms. There is a relationship of their toxicity to the dose and time of exposure for both nanoparticles and other chemical substances. It is noted that, as in classical toxicology, main conclusions on the toxicity and hazard of nanoparticles can be drawn only from traditional chronic toxicological experiments on the adequate route of their entry into the body.