Play in English, Arabic, Chinese or Spanish!
Ever wonder why plutonium got symbol Pu and not Pl?
Which car logo used to be an element symbol?
Where to find americium at home and why Mendeleev didn’t like tellurium?

If so, the Periodic Table Challenge is just for you.

Play now!

in Chemistry International

July - September 2020 issue
In 2019, in celebration of the 100th anniversary of IUPAC and the International Year of the Periodic Table, IUPAC and International Younger Chemists Network (IYCN) created the Periodic Table of Younger Chemists honoring a diverse group of outstanding younger chemists from around the world who embody the mission and core values of IUPAC and highlight the diversity of careers, creativity, and dedication of the young chemists leading the community into the next century. See feature page 3.

- Sustaining Active Learning in Virtual Classroom by Fun Man Fung et al
- Blockchain Technology by Bonnie Lawlor
- Extending electronegativities to superheavy atoms by Paul J. Karol
- Gender Gap in Science by Mei-Hung Chiu and Mark Cesa

& News, Projects, imPACt, and more ...


Diversity and Inclusion

Chemistry is all about diversity: each new bond, each additional group makes the whole richer and stronger. IUPAC recognizes that to fulfill its vision, it must strongly commit to embracing and promoting transparency, diversity, inclusion, and equal opportunities for all.


Celebrate PAC 60th anniversary!

Subscribe now to the online edition of PAC for 60 USD / 60 GBP / 60 EUR
Since 1960, IUPAC has made available to chemists everywhere a large amount of important chemical information published in the journal Pure and Applied Chemistry.
Visit https://www.degruyter.com/PAC



The items are designed to promote IUPAC and chemistry worldwide and bring awareness to the work of IUPAC and of course, the IUPAC Periodic Table of Elements!
So, check out the store and see how you could support IUPAC in our vision to be the indispensable worldwide resource for chemistry and celebrate IUPAC100!
Our new store was launched in Paris at the World Chemistry Congress and General Assembly to mark IUPAC’s Centenary celebration in 2019 and the International Year of the Periodic Table.



to access premium content
Starting in July 2018, access to Chemistry International will be restricted to IUPAC Members and Affiliate Members. Authentication will require that you LOGIN for free licensed access to CI.
The default distribution of CI is now digital and those who wish to receive a print copy are invited to subscribe.

LOGIN also to review your profile and mailing address, and to reaffirm what personal information IUPAC can share publicly.


Advancing the Worldwide Role of Chemistry

IUPAC serves the international scientific endeavor in the dual function of a fundamental science and mission-oriented Union. The Union is in a unique position to contribute to the central interdisciplinary chemical sciences.

  • An

    Analytical Chemistry

  • Ph

    Physical Chemistry

  • En

    Chemistry and Environment

  • Or

    Organic Chemistry

  • In

    Inorganic Chemistry

  • Wn

    Chemistry Applied to World Needs

  • Pc

    Publications and Cheminformatics Data Standards

  • Hh

    Chemistry and Human Health

  • Po


  • Nt

    Nomenclature and Terminology

  • Ec

    Chemistry Education

  • Gc

    Green Chemistry for Sustainable Development

  • Ic

    Chemistry and Industry

Over 50 nations are Affiliated with IUPAC Is yours? Click to find out

National Adhering Organizations

Learn More

Associate National Adhering Organizations

Learn More

Associated Organizations

Learn More

Company Associates

Learn More

Individual Members

Learn More

Upcoming Event: 1 August 2020

ONLINE till 31 Aug. Research and Innovations in Chemical Sciences: Paving the Way Forward

Join now from anywhere

Upcoming Event: 13 August 2021


IUPAC 2021 Congress - Frontiers in Chemistry

Plan to attend