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)

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

F 

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(563-79-1)Related Product Information

• 1-BUTENE
• Pinacolone
• Tiglic aldehyde
• N,N-Dimethylformamide
• Dacthal
• Polybutene
• Dimethyl sulfide
• 3-SULFOLENE
• Fumaric acid
• Dimethyl sebacate
• 2-Methyl-2-butene
• Maleic acid
• ETHANE
• Dimethyl carbonate
• CIS-BUTENEDIOIC ANHYDRIDE
• CIS-2-BUTENE
• Dimethyl sulfate
• Dimethyl sulfoxide