Legacy Archives Timeline

1870s

1876
American Chemical Society founded on April 6, 1876, at the College of Pharmacy of the City of New York (now New York University). By year's end, ACS had a total of 35 members.

Proceedings of the American Chemical Society is published—three years later this publication would become Journal of the American Chemical Society. With this, ACS became the first society in the U.S. to publish a journal specifically for chemists.

1879
The first issue of the Journal of the American Chemical Society is published.

1880s

1887
Svante A. Arrhenius proposes ionic dissociation theory.

1888
Henri Le Chatelier studies the effects of temperature and pressure on equilibrium.