- Pierre L. DuLong—researcher on refractive indices and specific heats gases—was born on this date in 1785. He discovered nitrogen trichloride in 1813, discovered the law of constancy of atomic heat (DuLong-Petit Law) in 1819, suggested that acids were compounds of hydrogen in 1815, and devised formula for heat value of fuels (DuLong formula).
- Moritz Traube—a researcher in semipermeable membrances, sugars, respiration, fermentation, oxidation, protoplasm, and muscle—was born on this date in 1826.
- Henry C. Pearson, born in 1858, was a rubber scientist and an editor.
- Dennis Searle and E. M. Skillings discovered deposits of borax and other soluble salts in San Bernardino, CA in 1873.
- Julius Nieuwland, born in 1878 and dubbed the "Father of Acetylene Chemistry", discovered neoprene.
- Evan J. Crane, born in 1889, was editor of Chemical Abstracts from 1915 to 1958.
- Herbert A. Hauptman, born in 1917, developed methods for determination of crystal structures and won the Nobel Prize in Chemistry (1985).
- Lawrencium (Lr, 103) was produced at University of California, Berkeley in 1961.
- Hans K. A. S. von Euler-Chelpin, born in 1873, was a researcher on enzymes and fermentation and won the Nobel Prize in Chemistry (1929).
- Charles Thomas, born in 1900, received many awards, including the Priestley Medal.
- E. P. Bundy, H. T. Hall, H. M. Strong, and R. H. Wentoff announced the synthesis of diamonds at GE Research Laboratories in 1955.
- Friedrich K. Beilstein, born in 1838, published a standard reference work on organic chemistry (1880–1883).
- Frederick Soddy coined phrase "isotopic elements" for elements that share same place in the periodic table in 1913.