Eurostat, Luxembourg. 29012399 (01/1995-12/2003) Butene `butylene` and isomers thereof (excl. but-1-ene and but-2-ene and for use as a power or heating fuels): CN 29012399 /Exports /Unit = Prices (Euro/ton) /Partner: Denmark /Reporter: European Union /29012399:Butene 'butylene' and Isomers Thereof (Excl. But-1-ene and But-2-ene and for use as a Power or Heating Fuels).