Definition of American chemical society

The American Chemical Society (ACS) is a learned society (professional association) based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has over 160,000 members at all degree-levels and in all fields of chemistry, chemical engineering and related fields. The ACS is a 501(c)3 non-profit organization. The ACS holds national meetings twice a year covering the complete field of chemistry, plus dozens of smaller conferences in specific fields. Its publications division produces several scholarly journals including the Journal of the American Chemical Society. The primary source of income of the ACS is the Chemical Abstracts Service and its publications.  Chemical & Engineering News is the weekly news magazine published by the American Chemical Society and sent to all members.