Eurostat, Luxembourg. 38249030 (01/2007-12/2016) Naphthenic acids and the water-insoluble salts and esters thereof: CN 38249030 /Exports /Unit = Prices (Euro/ton) /Partner: Canada /Reporter: European Union /38249030:Naphthenic Acids and the Water-insoluble Salts and Esters Thereof.