Arne Ölander became a member of the Academy of Engineering in 1943, was secretary of the Academy of Sciences Nobel Committees from 1943 to 1965, committee member of the International Union of Pure and Applied Chemistry from 1949 to 1971, where he was primarily engaged in issues related to chemical nomenclature.
Świętosławski was Vice-Chairman of the International Union of Pure and Applied Chemistry (IUPAC) and created the foundations for a new branch of physical chemistry: polyazeotropy.
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