from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Two acetyl groups in a compound
  • n. butanedione

from The Century Dictionary and Cyclopedia

  • n. A yellow compound, CH3COCOCH3, the simplest member of the class of aliphatic 1, 2-diketones, prepared from isonitroso methyl-ethyl ketone. It boils at 88° C., has a pungent, sweet odor, and its vapor has the color of chlorin.


Sorry, no etymologies found.


  • The culprit appears to be a compound known as diacetyl, which sort of gives you that buttery flavoring.

    CNN Transcript Sep 5, 2007

  • A new study shows that exposure to a chemical called diacetyl, a component of artificial butter flav ...


  • They grow best at moderate temperatures, well below the typical temperature of yogurt fermentation; they’re only moderate acid-producers, so the milks and creams they ferment never get extremely sour; and certain strains have the ability to convert a minor milk component, citrate, into a warmly aromatic compound called diacetyl that miraculously complements the flavor of butterfat.

    On Food and Cooking, The Science and Lore of the Kitchen

  • It might be said semisynthetic or synthetic drugs such as diacetyl - that so does any good general practitioner.

    Recently Uploaded Slideshows

  • I just found out that someone I know has popcorn lung, an irreversible lung disease caused by inhaling the buttery aroma of microwave popcorn, or specifically diacetyl, the chemical used to produce the buttery taste in the absence of actual butter.

    The Truth . . . about Popcorn Lung

  • Exposure to what the Occupational Safety and Health Administration terms "volatile butter-flavoring ingredients" (the chemical is diacetyl, currently being phased out of popcorn production.)

    Simran Sethi: Life Cycle: Kernels of Wisdom about Popcorn

  • On March 16, the Occupational Safety and Health Administration (OSHA) announced it was moving to protect workers from a serious lung disease caused by diacetyl, the artificial butter flavoring added to popcorn and other food products.

    Art Levine: What's Obama Done for Workers in His First 100 Days? Plenty

  • In recent years, hundreds of workers in plants where diacetyl is produced or applied to food have developed the rare and sometimes fatal disease, bronchiolitis obliterans, also known as "popcorn lung."

    Art Levine: What's Obama Done for Workers in His First 100 Days? Plenty

  • The three companies that sell Orville Redenbacher, Act II, Pop Secret and Jolly Time microwave popcorn are planning to revamp their microwave popcorn formulations to remove diacetyl, which was been linked to cases of bronchiolitis obliterans, a rare life-threatening disease often called popcorn lung, the Associated Press reported on Wednesday.

    Archive 2007-09-01

  • Assemblywoman Sally Lieber (D) has introduced a bill to ban diacetyl use by 2010.

    Microwave Popcorn Is The New Asbestos | Impact Lab


Log in or sign up to get involved in the conversation. It's quick and easy.

  • I can believe it's not butter, folks.

    March 19, 2008