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Chemical Properties

CAS Registry Number: 79-29-8

Selected information from two of the National Library of Medicine's databases: ChemIDPlus2 and HSDB3.

Names 1

  • 2,3-Dimethylbutane
  • Butane, 2,3-Dimethyl-

Structure

Chemical Structure for Chemical Abstracts Service Registry Number 79-29-8 from NLM

Synonyms (Sources: NTP,HSDB,RTECS,MESH)2

  • 1,1,2,2-Tetramethylethane
  • Biisopropyl
  • Butane, 2,3-dimethyl-
  • Diisopropyl
  • HSDB 76

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Other Registry Numbers2

  • None Found

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Chemical Properties3

Property Description
Boiling Point
  • 57.9 DEG C @ 760 MM HG
Color/Form
  • COLORLESS LIQUID
Corrosivity
  • None Found
Critical Temperature & Pressure
  • Critical temperature = 499.98 deg K; critical pressure = 3.1268X10+6 Pa
Density/Specific Gravity
  • 0.6616 @ 20 DEG C/4 DEG C
Dissociation Constants
  • None Found
Heat Of Combustion
  • 3877.86 kJ/mol
Heat Of Vaporization
  • 29.2 kJ/mol @ 25 deg C
Melting Point
  • -128.8 DEG C
Molecular Weight
  • 86.18
Odor
  • None Found
Other Chemical/Physical Properties
  • Heat of Fusion at Melting Point = 7.9914X10+5 J/kmol
  • IG Heat of Formation = -1.7680X10+8 J/kmol
  • Liquid molar volume = 0.131050 cu m/kmol
  • VAPOR PRESSURE 400 MM HG @ 39.0 DEG C
Relative Evaporation Rate
  • None Found
Solubilities
  • SOL IN ETHANOL, ETHER; VERY SOL IN ACETONE
  • Water solubility = 22.5 mg/l at 25 deg C
Spectral Properties
  • IR: 153 (Sadtler Research Laboratories IR Grating Collection)
  • MASS: 148 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
  • NMR: 10219 (Sadtler Research Laboratories Spectral Collection)
  • SADTLER REF NUMBER: 687 (IR, PRISM); INDEX OF REFRACTION: 1.3750 @ 20 DEG C/D
Surface Tension
  • 2.3229X10-2 N/m @ melting point
Taste
  • None Found
Vapor Density
  • 3.0 (AIR= 1)
Vapor Pressure
  • Vapor pressure = 235 mm Hg at 25 deg C
Viscosity
  • Liquid viscosity = 4.5661X10-4 @ 273.15 deg K
log P (octanol-water)
  • Log Kow = 3.42
pH
  • None Found

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Uses3

  • HIGH OCTANE FUELS **PEER REVIEWED**
  • ORGANIC SYNTHESIS **PEER REVIEWED**

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Notes (Sources: NTP,HSDB,RTECS,MESH)2

  • None Found.

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Superlist Classes2

  • None Found

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Links to Additional Information2

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Footnotes

1 Source: the NTP's CEBS database.

2 Source: the National Library of Medicine's ChemIDPlus, 02/28/2017.

3 Source: the National Library of Medicine's Hazardous Substance Database, 02/28/2017.

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