- Charles Hatchett announced his discovery of columbium (niobium) (Nb, 41) before Royal Society, 1801
- Born in 1817, C. Adolphe Wurtz discovered method of synthesis of hydrocarbons (Wurtz reaction), methyl and ethylamines, phosphorus oxychloride in 1846, and glycol in 1856.
- Beckman Instruments incorporated, 1934.
- Lars Onsager, born 1903, researched thermodynamics of irreversible reactions; Nobel Prize in Chemistry (1968).
- Chaim Weizmann, born 1874, discovered method for synthesizing acetone (1916); first president of Israel (1949-1952).
- Born in 1902, Maurice Arveson, authority on petroleum technology.
- Announcement of first pure compound of berkelium (Bk, 97) based on work at University of California, Berkeley, 1962.
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- Born in 1761, Smithson Tennant discovered iridium (Ir, 77) and osmium (Os, 76) in 1803; and proved that diamonds are pure carbon.
- Born in 1849, Georg E. E. Wagner, researcher in terpene chemistry, permanganate hydroxylation of alkenes, and Wagner-Meerwein rearrangements.
- Monsanto Chemical Co. organized, 1901.
- Born in 1915, Henry Taube, researcher in electron transfer reactions; recipient of Nobel Prize in Chemistry (1983).
- Chlorotetracycline, a broad-spectrum antibiotic, isolated by B. M. Duggar, American Cyanamid Corporation, 1948.
- Born in 1743, Martin H. Klaproth discovered zirconium (Zr, 40) and uranium (from pitchblende) (U, 92) in 1789, and cerium (Ce, 58) with J. Jacob Berzelius and William Hisinger (1803); also chromium (Cr, 24) previously discovered by N. L. Vauquelin (1797).
- First production of calcium carbide in North America, American Cyanamid Co. (1909).
- Born in 1859, Ludwig Knorr synthesized heterocyclic compounds.
- Born in 1867, Nikolai M. Kishner contributed to the Wolff-Kishner reduction of aldehydes and ketones.
- Born in 1921, Isabella L. Karle is a researcher on three-dimensional structure of molecules using X-ray and electron diffraction.
- First atomic pile produced self-sustained nuclear chain reaction under Stagg Field, University of Chicago (1942).