After the solvent (ronsonal) evaporated, a yellowish goo like melted butter was left. It does not dry, it stays wet and oily. Is this some product left from the naphtha, or DMT? It smells synthetic but don't want to mess with it if it's some impurity left from naphtha. Information would be helpful so that one may add more base in the case molecule has not yet transfered to solvent.