On this day in 1897, Dr. Felix Hoffmann successfully created a chemically pure and stable form of acetylsalicylic acid. His handwritten laboratory notes—aspirin's “birth certificate”—suggested: “Through its physical characteristics...

Count of Quaregna Amedeo Avogadro was born on this day in 1776. Italian chemist and physicist who found that at the same temperature and pressure...

  Germain Henri Hess was born on this day in 1802. Swiss-Russian chemist whose studies of heat in chemical reactions formed the foundation of thermochemistry. He...

Famous chemist Jöns Jacob Berzelius was died on this day in 1848. Swedish chemist who established the beginnings of modern chemistry. Among his contributions are...