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2,3-DIMETHYL-1,3-BUTADIENE

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2,3-DIMETHYL-1,3-BUTADIENE Basic information

Product Name:
2,3-DIMETHYL-1,3-BUTADIENE
Synonyms:
  • 2,3-Dimethyl-1,3-butadiene - stab with BHT
  • 2,3-dimethyl-3-butadiene
  • 2,3-Dimethylbutadiene
  • 2,3-Dimethylenebutane
  • 2,3-Dimethylerythrene,Diiso-propenyl
  • 2,3-DIMETHYL-BUTA-1,3-DIENE
  • 2,3-DIMETHYL-1,3-BUTADIENE
  • Biisopropenyl
CAS:
513-81-5
MF:
C6H10
MW:
82.14
EINECS:
208-172-0
Product Categories:
  • Acyclic
  • Alkenes
  • DID - DINChemical Class
  • NeatsGasoline, Diesel,&Petroleum
  • Substance classes
  • Organic Building Blocks
  • Alpha Sort
  • D
  • DAlphabetic
  • Hydrocarbons
  • Olefins
  • Volatiles/ Semivolatiles
Mol File:
513-81-5.mol
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2,3-DIMETHYL-1,3-BUTADIENE Chemical Properties

Melting point:
-76 °C (lit.)
Boiling point:
68-69 °C (lit.)
Density 
0.726 g/mL at 25 °C (lit.)
vapor pressure 
269 mm Hg ( 37.7 °C)
refractive index 
n20/D 1.438(lit.)
Flash point:
−8 °F
storage temp. 
2-8°C
form 
Liquid
color 
Clear colorless
Water Solubility 
Miscible with chloroform. Immiscible with water.
Merck 
14,3238
BRN 
605285
Dielectric constant
2.1000000000000001
CAS DataBase Reference
513-81-5(CAS DataBase Reference)
EPA Substance Registry System
1,3-Butadiene, 2,3-dimethyl- (513-81-5)
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Safety Information

Hazard Codes 
F
Risk Statements 
11
Safety Statements 
16-23
RIDADR 
UN 3295 3/PG 2
WGK Germany 
3
9
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29012900

MSDS

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2,3-DIMETHYL-1,3-BUTADIENE Usage And Synthesis

Chemical Properties

Clear colorless liquid

Uses

2,3-Dimethyl-1,3-butadiene undergoes Diels Alder cycloaddition reaction and it also participates in polymerization reactions. It is also involved in manufacturing of synthetic rubber.

General Description

2,3-Dimethyl-1,3-butadiene (DMBD) is a conjugated diene. It undergoes Diels Alder cycloaddition reaction with 2-thio-3-chloroacrylamides under thermal, catalytic and microwave conditions. It undergoes thermal [4+2] cycloaddition reaction with 3-acetyl-, 3-carbamoyl and 3-ethoxycarbonylcoumarins under solvent free conditions. DMBD participates in polymerization reactions in the presence of iron dichloride complexes based catalysts.

Purification Methods

Distil it from NaBH4, and purify it by zone melting. [Beilstein 1 IV 1023.]

2,3-DIMETHYL-1,3-BUTADIENE Preparation Products And Raw materials

Raw materials

2,3-DIMETHYL-1,3-BUTADIENESupplier

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