– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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International Union of Pure and Applied Chemistry (IUPAC)

IUPAC serves to advance the worldwide aspects of the chemical sciences and to contribute to the application of chemistry in the service of Mankind. As a scientific, international, non-governmental and objective body, IUPAC can address many global issues involving the chemical sciences.

IUPAC is recognized as the world authority on chemical nomenclature, terminology, standardized methods for measurements, and atomic weights. The IUPAC Interdivisional Committee on Terminology, Nomenclature and Symbols (ICTNS) plays a core role in this activity; amongst other points the ICTNS is responsible for ensuring that, prior to publication of any IUPAC document, full consultations have taken place and the widest possible consensus has been reaced among all Divisions and other bodies of the Union, and between IUPAC and other ICSU bodies, the international standardizing organizations, and the Conférence Générale des Poids et Mesures (CGPM) and its Committees. The full terms of reference of the ICTNS are available here.

Links between the BIPM and the IUPAC:

  • The BIPM is represented on the IUPAC Interdivisional Committee on Terminology, Nomenclature and Symbols (ICTNS).
  • IUPAC is a member of the CCQM, the CCU, and the JCGM.

BIPM contact(s):
IUPAC contact(s):
  • Prof. Ron Weir (ICTNS Chair)