Thank you for your interest in joining IUPAC|CHAINS2023 World Chemistry Congress and or the IUPAC General Assembly. We look forward meeting you in The Hague. All information related to registration can be found below.

Register here

In case you need a Letter of Invitation, you can fill in a separate form of which you will receive a link in the confirmation message after completing your registration.

Congress ticketing fees (a)

Day Registration – Wednesday or Friday


Participant Early fee
(15 FEB – 15 JUN 2023)
Regular fee
(2 JUN – 4 AUG 2023)
Late fee
(5 AUG – 25 AUG 2023)
General participant €800 €900 €1015
IUPAC Affiliate Member €720 €810 €910
IUPAC Delegates, IUPAC Division/Committee Member €400 €500 €625
Non-Domestic Student (BSc, MSc, PhD) €350 €455 €575
Domestic Regular (b) €455 €550 €675
Domestic Student (BSc, MSc, PhD; at an institution in The Netherlands) (b) €265 €350 €475
Domestic KNCV-member (b, c) €350 €450 €575
Domestic KNCV Student member (BSc, MSc, PhD; at an institution in The Netherlands) (b, c) €245 €330 €455
Day Registration – Wednesday or Friday €200
Day Registration – Monday, Tuesday or Thursday €300

(a) Ticketing fees include access to the full scientific program, exhibition area, bites and drinks during the Welcome reception (Sunday) and lunches during the congress.
(b) Domestic is defined as persons working, studying, or living in the Netherlands.
(c) Become a member of the Royal Netherlands Chemical Society (KNCV) now and profit directly from a discounted fee. This is only possible for domestic members (see b above)

We also provide information on this website in order to help you plan your trip, such as:

Furthermore, we have an Evening program you can sign up for, which can be found here.

If you have any further questions, please contact us via the contact form.

Important deadlines

Focus Sessions

Call for Focus Sessions open: 27 June 2022
Focus Session deadline: 3 October 2022

Abstracts (oral & poster)

Call for abstracts open: 12 December 2022
Deadline oral abstracts: 15 February 2023
Deadline poster abstracts: 17 April 2023 (or until completely full)
Notification: Mid April 2023


Preliminary program: April 2023
Final program: June 2023


Registration open: 15 February 2023
End of Early Fee: 15 June 2023
End of Regular Fee: 4 August 2023

18 25 August: IUPAC General Assembly
20 – 25 August: IUPAC|CHAINS2023 World Chemistry Congress