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With more than 158,000 members, the American Chemical Society (ACS) is the world's largest scientific society and one of the world's leading sources of authoritative scientific information. A nonprofit organization, chartered by Congress, ACS is at the forefront of the evolving worldwide chemistry enterprise and the premier professional home for chemists, chemical engineers and related professions around the globe.
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ACS Spring 2025
269th American Chemical Society National Meeting & Exposition
3/23/2025 - 3/27/2025
Green Chemistry & Engineering Conference 2025
29th Annual Green Chemistry & Engineering Conference
6/23/2025 - 6/26/2025
ACS Fall 2025
270th American Chemical Society National Meeting & Exposition
8/17/2025 - 8/21/2025
Pacifichem 2025
International Chemical Congress of Pacific Basin Societies
12/15/2025 - 12/20/2025
ACS Spring 2026
American Chemical Society National Meeting & Exposition
3/22/2026 - 3/26/2026



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