Liaison: International Union of Pure and Applied Chemistry (IUPAC)


Formal relationship


Links between the BIPM and IUPAC

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


IUPAC is the global organization that provides objective scientific expertise and develops the essential tools for the application and communication of chemical knowledge for the benefit of humankind and the world.

The BIPM and IUPAC cooperate to ensure that data published by IUPAC, related in particular to chemical properties and measurements, makes appropriate consideration and reference to the SI units, metrological traceability and measurement uncertainty and ensure that any IUPAC document ("Colour Books"), and in particular Quantities, Units and Symbols in Physical Chemistry ("Green Book"), concerned with terminology, nomenclature, symbols and other conventions is consistent with the SI Brochure.



Dr Robert I. Wielgosz

Chemistry Department

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