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ACS Fall 2025

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August 17 - 21

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ACS support for science
Last week we reaffirmed our commitment to science in a letter to our members. Now, we’re sharing the message publicly. We are committed to working to advance scientific knowledge, empower a global community and champion scientific integrity.

We Have Updated our Privacy Policy
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Proactive Membership Assistance Program
Have you been negatively affected by unforeseen circumstances? ACS and the Proactive Membership Assistance Program is here for you. Learn about ACS resources and benefits available to you during difficult times.

¡Ahora en español! Middle School Chemistry website now in Spanish
The new Middle School Chemistry website in Spanish is here! More content with more fun and learning!

2024 ACS Annual Report
The annual report is now available and includes a message from the CEO, highlights of several ACS achievements in the past year and a financial overview highlighting the Society’s strong performance in 2024.

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Welcome to Amerian Chemical Society

Save 20% on ACS Membership dues

Support Science

ACS Fall 2025

Connect with the World's Largest Scientific Community

Discover more with ACS scientific resources

Advance your Career in the Global Economy

ACS support for science Last week we reaffirmed our commitment to science in a letter to our members. Now, we’re sharing the message publicly. We are committed to working to advance scientific knowledge, empower a global community and champion scientific integrity.

We Have Updated our Privacy Policy We have updated our Privacy Policy and introduced a new cookie management tool to give you more control over cookies on our website. Please review the updated policy and customize your cookie preferences to suit your needs.

Proactive Membership Assistance Program Have you been negatively affected by unforeseen circumstances? ACS and the Proactive Membership Assistance Program is here for you. Learn about ACS resources and benefits available to you during difficult times.

¡Ahora en español! Middle School Chemistry website now in Spanish The new Middle School Chemistry website in Spanish is here! More content with more fun and learning!

2024 ACS Annual Report The annual report is now available and includes a message from the CEO, highlights of several ACS achievements in the past year and a financial overview highlighting the Society’s strong performance in 2024.