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1,4-Dichloro-2-butyne

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1,4-Dichloro-2-butyne Basic information

Product Name:
1,4-Dichloro-2-butyne
Synonyms:
  • 1,4-DICHLORO-2-BUTYNE
  • 1,4-dichloro-2-butyn
  • 1,4-dichloro-but-2-yne
  • 1,4-Dichlorobutyne
  • Dichlorobutyne
  • 2-Butyne, 1,4-dichloro-
  • bis(chloromethyl)acetylene
  • 1,4-Dichloro-2-butyne, 99% 25ML
CAS:
821-10-3
MF:
C4H4Cl2
MW:
122.98
EINECS:
212-474-8
Product Categories:
  • Building Blocks
  • Chemical Synthesis
  • Acetylenes
  • Functionalized Acetylenes
  • Halogenated Hydrocarbons
  • Organic Building Blocks
  • Alkynyl
  • Halogenated Hydrocarbons
  • Organic Building Blocks
Mol File:
821-10-3.mol
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1,4-Dichloro-2-butyne Chemical Properties

Melting point:
162-165 °C
Boiling point:
165-168 °C (lit.)
Density 
1.258 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.505(lit.)
Flash point:
320 °F
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
solubility 
Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form 
Oil
color 
Clear Colourless
Sensitive 
Light Sensitive
BRN 
635740
InChIKey
RCHDLEVSZBOHOS-UHFFFAOYSA-N
CAS DataBase Reference
821-10-3(CAS DataBase Reference)
NIST Chemistry Reference
2-Butyne, 1,4-dichloro-(821-10-3)
EPA Substance Registry System
1,4-Dichloro-2-butyne (821-10-3)
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Safety Information

Hazard Codes 
Xi,T
Risk Statements 
36/37/38-40-23/24/25
Safety Statements 
26-36-45-38-36/37/39-28A
RIDADR 
UN 2810
WGK Germany 
3
RTECS 
ER9600000
8-10
HazardClass 
6.1
PackingGroup 
II
HS Code 
29032900

MSDS

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1,4-Dichloro-2-butyne Usage And Synthesis

Chemical Properties

CLEAR COLORLESS TO YELLOWISH LIQUID

Uses

1,4-Dichloro-2-butyne used in the synthesis of 1,4-disubstituted 1,2,3-triazoles. Also, it is used in the approach of the 20S-camptothecin family of antitumor agents.

Preparation

1,4-Dichloro-2-butyne could be conveniently prepared by treating 1,4-butynediol with Thionyl Chloride. However, as a precautionary measure, the medium is diluted with CH2Cl2 and cooled to ?30?°C before adding thionyl chloride to avoid hazards associated with the exothermicity of the reaction.

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of Cl-. Probably a dangerous fKe and explosion hazard. See also ACETYLENE COMPOUNDS and CHLORINATED HYDROCARBONS, ALIPHATIC

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