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)

Participant Early fee
(15 FEB – 1 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

(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: 1 June 2023
End of Regular Fee: 4 August 2023

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

FAQ Registration

Is registration required to join the IUPAC|CHAINS 2023 congress?

Yes, registration will be required to attend the IUPAC|CHAINS World Chemistry Congress, including all plenary sessions, parallel sessions, networking sessions, exhibition area and more.

Is registration required to join the IUPAC General Assembly?

Yes, registration will be required to attend the IUPAC General Assembly.

What are the registration deadlines?

We encourage you to take advantage of our early-bird registration fees to register by 1 June 2023, at 11:59 pm CET. By registering in advance of this deadline, you will receive a lower fee and receive further relevant updates related to the event.

IUPAC|CHAINS 2023 does not have a final registration deadline. Attendees will be able to register at any time and it will even be possible to register on-site. Please note that fees will increase after 1 June 2023 and after 4 August 2023.

What is your cancellation policy?

Written cancellation must be received by the IUPAC|CHAINS2023 organization no later than 18 June 2023 to qualify for a refund. A €50.00 administration fee will apply. After 18 June 2023, there will be no refunds. To cancel a registration, contact us at

How do I apply for a Letter of Invitation?

Letters of invitations required for VISA applications can be requested by filling in the form of which you will receive a link in your confirmation message after completing registration. Please note that letters will only be sent to those who have registered and paid their registration fee. Please be sure to request a letter and apply for a VISA on time. Failure to acquire a VISA in time to travel is unfortunately not a valid reason for a refund of your registration fee.

How do you take care of privacy regulations?

Personal data will be collected, processed, stored by Congress by design (the “Processor”), on behalf of the IUPAC|CHAINS 2023 organizers, in its capacity as data controller, and shared with the IUPAC|CHAINS 2023 organizers. Congress by design will share registrant names with 3rd parties for the purpose of organising the Congress.
Delegates’ personal data will be retained securely and under the applicable law, you may, at any time, request access to your personal data, as well as its rectification, erasure or limited processing, portability of your data, or oppose to the processing by written request addressed to the Data Controller through the e-mail address
Congress by design does not give your personal information to anyone else unless one of the following applies:
• You would reasonably expect that your information will be passed on to the recipient as part of the provision of products or services to you ancillary to your registration for this conference;
• You have consented:
• It is required or authorized by law;
• It will prevent or lessen a serious and imminent threat to somebody’s life or health;
• It is reasonably necessary for the enforcement of the criminal law or of a law imposing a pecuniary penalty, or for the protection of public revenue.

How were the conference registration prices and fees determined?

As a non-profit organization, we take pride in offering our services to the community at the lowest cost possible and this conference is no exception. The event includes:

  • A dedicated staff to organize an engaging and exciting event; and
  • The rent of a venue that allows for an all-inclusive and value-adding experience, including: audio-visual equipment, lunch, catering points, integrated networking opportunities, technical support for simple presentation uploading and setting up and support of an interactive exhibition hall.