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    Ketone

    A class of organic compounds composed of a carbonyl group (a double-bonded carbon and oxygen group) attached to two alkyl groups (a variety of hydrocarbons having the general formula C'n'H2'n+1'), such as acetone, whose chemical formula is CH3COCH3. Ketones are highly volatile liquids commonly used as solvents in inks produced for gravure and flexographic printing.

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