Contains data on the physical and thermodynamic properties of more than 1800 substances, as well as information on electrochemistry, analytical chemistry, structure of matter, properties of solutions, chemical equilibrium. The 3rd edition includes new materials: the basics of modern nomenclature, characteristics of natural polymers, information on laboratory technology, etc. A number of data have been clarified. Bibliography updated. The reference book can serve as a short desktop textbook on chemistry for scientific and technical workers, laboratory assistants, teachers, university students, technical school students and senior high school students.