1,3-Dichlor-2-buten

Strukturformel
Strukturformel von 1,3-Dichlor-2-buten
cis-trans-Gemisch
Allgemeines
Name 1,3-Dichlor-2-buten
Andere Namen
  • 1,3-Dichlorbut-2-en
  • 1,3-DCB
Summenformel C4H6Cl2
Kurzbeschreibung

farblose Flüssigkeit[1]

Externe Identifikatoren/Datenbanken
CAS-Nummer
EG-Nummer 213-138-3
ECHA-InfoCard 100.011.945
PubChem 13556
Wikidata Q60023051
Eigenschaften
Molare Masse 125 g·mol−1
Aggregatzustand

flüssig

Dichte

1,161 g·cm−3[1]

Schmelzpunkt

−81 °C[1]

Siedepunkt

126 °C[1]

Dampfdruck
Löslichkeit

praktisch unlöslich in Wasser[1]

Brechungsindex
  • 1,4735 (20 °C, cis)[2]
  • 1,4719 (20 °C, trans)[2]
Sicherheitshinweise
GHS-Gefahrstoffkennzeichnung[1]
Gefahrensymbol Gefahrensymbol Gefahrensymbol

Gefahr

H- und P-Sätze H: 226​‐​301​‐​331​‐​314
P: 210​‐​260​‐​280​‐​302+352​‐​305+351+338​‐​310[1]
Soweit möglich und gebräuchlich, werden SI-Einheiten verwendet.
Wenn nicht anders vermerkt, gelten die angegebenen Daten bei Standardbedingungen (0 °C, 1000 hPa). Brechungsindex: Na-D-Linie, 20 °C

1,3-Dichlor-2-buten ist eine chemische Verbindung aus der Gruppe der Chlorkohlenwasserstoffe.

Gewinnung und Darstellung

1,3-Dichlor-2-buten kann durch Reaktion von 2-Chlor-1,3-butadien und Chlorwasserstoff mit Kupfer(I)-chlorid als Katalysator gewonnen werden. Es entsteht außerdem als Nebenprodukt bei der Herstellung von Chloropren aus Butenin.[3]

Einzelnachweise

  1. ↑ a b c d e f g h i Eintrag zu 1,3-Dichlor-2-buten in der GESTIS-Stoffdatenbank des IFA, abgerufen am 8. Januar 2020. (JavaScript erforderlich)
  2. ↑ a b David R. Lide (Hrsg.): CRC Handbook of Chemistry and Physics. 90. Auflage. (Internet-Version: 2010), CRC Press / Taylor and Francis, Boca Raton FL, Physical Constants of Organic Compounds, S. 3-152.
  3. ↑ Das Gleichgewicht Flüssigkeit—Dampf des Systems trans-1,3-Dichlor-2-buten—2,3,4-Trichlor-1-buten. In: Chem. zvesti 23, 270–274 (1969).

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