↑ Scheele, C. W. (1774) "Om Brunsten eller Magnesia nigra och dess egenskaper" (On brown-stone or black magnesia [i.e., manganese ore] and its properties), Kungliga Svenska vetenskapsakademiens handlingar (Proceedings of the Royal Swedish Academy of Sciences), 35: 89–116; 177–194. On pages 109–110, Scheele mentions that refluxing ("digesting") ethanol (Alkohol vini) with manganese dioxide (Brunsten) and either hydrochloric acid (Spirtus salis) or sulfuric acid (Spiritus Vitrioli) produces a smell like "Aether nitri" (ethanol treated with nitric acid). Later investigators realized that Scheele had produced acetaldehyde.
↑ Brock, William H. (1997) Justus von Liebig: The Chemical Gatekeeper. Cambridge, England: Cambridge University Press, pp. 83–84.
↑ Liebig, J. (1835) "Sur les produits de l'oxidation de l'alcool" (On the products of the oxidation of alcohol), Annales de Chimie et de Physique, 59: 289–327. From p. 290: "Je le décrirai dans ce mémoire sous le nom d'aldehyde; ce nom est formé de alcool dehydrogenatus." (I will describe it in this memoir by the name of aldehyde; this name is formed from alcohol dehydrogenatus.)
↑ The name change occurred at least as early as 1868. See, for example: Eugen F. von Gorup-Besanez, ed., Lehrbuch der organischen Chemie für den Unterricht auf Universitäten … [Textbook of Organic Chemistry for Instruction at Universities …], 3rd ed. (Braunschweig, Germany: Friedrich Vieweg und Sohn, 1868), vol. 2, p. 88.
