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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
  • Halogenated Hydrocarbons
  • Organic Building Blocks
  • Acetylenes
  • Functionalized Acetylenes
  • 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.

Reactions

1,4-Dichloro-2-butyne can be converted into other compounds such as amides, ethers, and esters using ethyl diazoacetate.

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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