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2,3-Dimethyl-2-butene

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2,3-Dimethyl-2-butene Basic information

Product Name:
2,3-Dimethyl-2-butene
Synonyms:
  • 2,3-dimethyl-but-2-ene
  • 2,3-Dimethylbut-2-ene
  • 2,3-Dimethylbutene-2
  • Tetramethylethene
  • 2,3-DIMETHYL-2-BUTENE
  • TETRAMETHYLETHYLENE
  • 2,3-DIMETHYL-2-BUTENE, 1.0M SOLUTION IN TETRAHYDROFURAN
  • 2,3-DIMETHYL-2-BUTENE, STAB.
CAS:
563-79-1
MF:
C6H12
MW:
84.16
EINECS:
209-263-8
Product Categories:
  • Acyclic
  • Alkenes
  • Organic Building Blocks
Mol File:
563-79-1.mol
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2,3-Dimethyl-2-butene Chemical Properties

Melting point:
-75 °C (lit.)
Boiling point:
73 °C (lit.)
Density 
0.708 g/mL at 25 °C (lit.)
vapor pressure 
215 mm Hg ( 37.7 °C)
refractive index 
n20/D 1.412(lit.)
Flash point:
2 °F
storage temp. 
2-8°C
solubility 
0.071g/l
form 
Liquid
Specific Gravity
0.708
color 
Clear colorless to slightly yellow
explosive limit
1.2%(V)
Water Solubility 
Soluble in water (0.071 g/L)
Sensitive 
Air Sensitive
BRN 
1361357
Stability:
Stable. Highly flammable - readily forms explosive mixtures with air. Note low flash point. Incompatible with strong acids, strong oxidizing agents, peroxy compounds.
CAS DataBase Reference
563-79-1(CAS DataBase Reference)
NIST Chemistry Reference
2-Butene, 2,3-dimethyl-(563-79-1)
EPA Substance Registry System
2-Butene, 2,3-dimethyl- (563-79-1)
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Safety Information

Hazard Codes 
F,Xn,C
Risk Statements 
11-65-36/37/38-22-19-40-36/37
Safety Statements 
16-33-62-9-36/37/39-26-36/37
RIDADR 
UN 3295 3/PG 2
WGK Germany 
3
10-23
Autoignition Temperature
754 °F
Hazard Note 
Extremely Flammable/Corrosive/Harmful
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29012980

MSDS

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2,3-Dimethyl-2-butene Usage And Synthesis

Chemical Properties

colourless liquid

Uses

2,3-Dimethyl-2-butene was used in the preparation of thexyl NHC-borane (diMe-Imd-BH2thexyl).

General Description

2,3-Dimethyl-2-butene undergoes hydrolysis to form hydroxyl radical.

Purification Methods

Purify it by GLC on a column of 20% squalene on chromosorb P at 50o [Flowers & Rabinovitch J Phys Chem 89 563 1985]. Also wash it with 1M NaOH solution followed by H2O. Dry it over Na2SO4, distil it over powdered KOH under nitrogen and pass it through activated alumina before use. [Woon et al. J Am Chem Soc 108 7990 1986, Wong et al. J Am Chem Soc 109 3428 1987, Beilstein 1 IV 853.]

2,3-Dimethyl-2-butene Preparation Products And Raw materials

Raw materials

Preparation Products

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