ACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.

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.

Join us in San Diego from March 23-27, 2025 to get the latest research in chemistry, network and attend career events. 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 …

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 …

Join us at ACS Spring 2025 in San Diego, CA or online, March 23-27. Choose from thousands of presentations, network, attend courses and visit the expo.

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.

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.

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 …

ACS Meetings & Expos. Where thousands of chemistry professionals meet to share ideas and advance scientific and technical knowledge. Sharing your passion for chemistry, connecting with one of the world's largest scientific societies, and advancing your career in this ever-changing global economy.

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