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Do all ketones give a positive result with a 2,4 DNPH test?

To my understanding ketones will produce a precipitate with the 2,4 DNPH test, giving a positive result. But is this the case for all ketones? Are there any exceptions?
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Pigster
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Original post by Moonboy45
To my understanding ketones will produce a precipitate with the 2,4 DNPH test, giving a positive result. But is this the case for all ketones? Are there any exceptions?


Not that I know of.

BTW, 2,4-DNP will also throw a ppt with aldehydes, too. But I'm sure you knew that.

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