Chepurina Zinaida Valerievna RussiaSaratovSSU. Institute of Chemistry. Department of General and Inorganic Chemistry, 410012, Saratov, Astrakhanskaya srt., 83, building. 1, Institute of Chemistry, SSU младший научный сотруд- никilinkk@info.sgu.ru Author's articles ВСАЛИВАНИЕ – ВЫСАЛИВАНИЕ В ЧЕТВЕРНОЙ СИСТЕМЕ ВОДА – ПИРИДИН – МАСЛЯНАЯ КИСЛОТА – ИОДИД КАЛИЯ. РАЗРЕЗ 1 Topological Transformation of Phase Diagrams for Сut 1 of the Quaternary System Potassium Nitrate – Water – Pyridine – Butyric Аcid in 5–60оС Equilibrium Liquid–Liquid–Solid and Critical Phenomena in the Quaternary System Cesium Nitrate+Water+Pyridine+Butyric Acid with in the Range of 5 to 60°C Topological Transformation of Phase Diagram for Сut 2 of the Composition Tetrahedron of the Quaternary Potassium Nitrate – Water – Pyridine – Butyric Аcid System within 5–60°С