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Trimethyl nonanone is a colorless liquid with a fruity odor. Its odor has also been described as obnoxious.

The U.S. production of trimethyl nonanone was estimated to be 1-＜10 million lb in 2005 according to the 2006 U.S.EPA Inventory Update Reporting database. Its primary uses are as a reactant, an industrial cleaner, a degreaser, and in the production of 2,6,8-trimethyl-4-nonanol.