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As a non-profit scientific organization with more than 145 years’ experience, we are a champion for chemistry, its practitioners and our global community of members. The American Chemical Society (ACS) is a non-profit organization founded in …

Premium. The best option for students, professionals, or retired, now at a better price. For ACS Members who have retired from full-time employment and have 30 years of service, we offer Retired status – you can receive our Premium Package at a 50% discount.

Choose from thousands of oral presentations covering every area of chemistry, attend the poster session and visit the expo hall to meet vendors and learn about new tools and processes. Don’t miss the Keynote Events, exploring the theme of the meeting, and the Kavli Lectures, featuring emerging leaders and innovations in chemistry. In addition …

Membership: Over 200,000 individuals in ACS' global membership community in 140 countries Journals: 80+ peer reviewed journals CAS REGISTRY®: More than 219 million unique substances and sequences and 70 million protein and nucleic acd sequences CAS Reactions: More than 150 million single- and multi-step reactions CAS Patents: Patents published by 109 issuing authorities covering more than ...

Join us at ACS Fall 2025 in Washington, DC or online, August 17-21. Choose from thousands of presentations, network, attend courses and visit the expo.

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American Chemical Society: Chemistry for Life. ACS is at the forefront of the evolving worldwide chemical enterprise. We enable chemists, chemical engineers and related chemical professionals to address looming global challenges and improve people’s lives.