ETBE (Ethyl-tert-butylether) und TAME (Tert-Amylmethylether)
Johanna Bartling,
Johanna Bartling
Technische Universität Berlin, Berlin, Germany
Search for more papers by this authorJohanna Bartling,
Johanna Bartling
Technische Universität Berlin, Berlin, Germany
Search for more papers by this authorFirst published: 30 January 2014
Erstpublikation als Teil der Loseblattausgabe: 10.11.2010
Abstract
ETBE (CAS-Nr.: 637-92-3, auch 1,1-Dimethylethylether) und TAME (CAS-Nr.: 994-05-8, auch 1,1-Dimethylpropyl-methylether) sind tertiäre Alkyl-Ether und gehören zu den leichtflüchtigen Kohlenwasserstoffen. ETBE und TAME sind farblose, charakteristisch nach Ether riechende Flüssigkeiten, die sehr leicht entflammbar sind. Beide Substanzen haben sehr niedrige Geruchsbzw. Geschmacksschwellenwerte mit 1-2 µg/L (ETBE) und 7-16 µg/L (TAME). In Europa werden beide Stoffe als Kraftstoffzusatz eingesetzt und sind in zunehmendem Maße in der Umwelt nachweisbar. Sie breiten sich aufgrund ihrer physikochemischen Eigenschaften in der Luft und in Grund- und Oberflächenwasser aus. Schon bei Normaltemperatur ist die Bildung von explosionsfähigen Gemischen mit Luft möglich.
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