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Basic Information
CAS No.: 1653-19-6
Name: 2,3-dichlorobuta-1,3-diene
Article Data: 28
Molecular Structure:
Molecular Structure of 1653-19-6 (2,3-dichlorobuta-1,3-diene)
Formula: C4H4 Cl2
Molecular Weight: 122.982
Synonyms: 2,3-Dichloro-1,3-butadiene;2,3-Dichlorobuta-1,3-diyne; 2,3-Dichlorobutadiene; 2,3-Dichlorobutadiene-1,3;Dichlorobutadiene
Density: 1.148g/cm3
Boiling Point: 98°Cat760mmHg
Flash Point: 37.2°C
Safety: An eye and severe skin irritant. When heated to decomposition it emits toxic fumes of Cl−. See also CHLORINATED HYDROCARBONS, ALIPHATIC.
PSA: 0.00000
LogP: 2.49140
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Chemistry

Chemistry informtion about 2,3-Dichloro-1,3-Butadiene (CAS NO.1653-19-6) is:
IUPAC Name: 2,3-Dichlorobuta-1,3-Diene
Synonyms: 2,3-Dichlorobuta-1,3-Diene ; 2,3-Dichloro-1,3-Butadiene ; 2,3-Dichlorobutadiene-1,3 ; 2,3-Dichlorobutadiene
MF: C4H4Cl2
MW: 122.98056
EINECS: 216-721-0 
Density: 1.148 g/cm3
Flash Point: 37.2 °C 
Boiling Point: 98 °C at 760 mmHg
Vapour Pressure: 46.7 mmHg at 25°C
Enthalpy of Vaporization: 32.35 kJ/mol
Following is the molecular structure of 2,3-Dichloro-1,3-Butadiene (CAS NO.1653-19-6) is:

Toxicity Data With Reference

1.    

skn-rbt 500 mg/24H SEV

     28ZPAK    Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku Marhold, J.V.,Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha,Czechoslovakia.: 1972,29.
2.    

eye-rbt 500 mg/24H MLD

     28ZPAK    Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku Marhold, J.V.,Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha,Czechoslovakia.: 1972,29.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

An eye and severe skin irritant. When heated to decomposition it emits toxic fumes of Cl−. See also CHLORINATED HYDROCARBONS, ALIPHATIC. 
RIDADR: 1992
HazardClass: 3.1
PackingGroup: II

Specification

It is shown that industrially available 2,3-Dichloro-1,3-Butadiene (CAS NO.1653-19-6) is a useful starting material for the synthesis of 2,3-Dichloro-1,3-Butadiene . Ni(II)-catalyzed cross-coupling reaction of 2,3-Dichloro-1,3-Butadiene with ArMgBr (Ar = 2-thi-enyl,phenyl,4-dodecyloxyphenyl,and 4-fluorophenyl) gives the corresponding 2,3-Dichloro-1,3-Butadiene in good yields.