Join Date: Mar 2007
Location: New England
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Acetone ((CH3)2O) is chemically very different than Xylene, isopropylbezene,and Naptha. Acetone (and MEK and Cyclohexanone) are ketones, the others you mentioned are alkenes or in the case of Naptha a mixture of alkenes and alkanes. Acetone and MEK are low boiling very fast evaporting, were as the others are not.
I still advocate using water/soap as the initial process for getting rid of the bulk sanding dust/dirt, then following it with a solvent wipe (acetone or similar) for spot greasy or oily areas, then your paint prep fluid the whole, and lastly the topcoat paint.