The full form of IUPAC is International Union of Pure and Applied Chemistry. IUPAC is an international body established in 1919 by chemists from both industry and academia to standardize weights, measures, names, and symbols in chemistry. Its members are from national adhering organizations, national academies of sciences, national chemistry societies, or other bodies that represent chemists. IUPAC is recognized as the authority for chemical nomenclature and terminology, measurement, and atomic weights. It is also responsible for publishing recommendations, promoting the free exchange of scientific information, and fostering sustainable development.