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277258 Sigma-Aldrich

2-Methylbutane

anhydrous, ≥99%

Synonym: Isopentane

  • CAS Number 78-78-4

  • Linear Formula CH3CH2CH(CH3)2

  • Molecular Weight 72.15

  •  Beilstein/REAXYS Number 1730723

  •  EC Number 201-142-8

  •  MDL number MFCD00009338

  •  PubChem Substance ID 57648270

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Properties

Related Categories Anhydrous Solvents, Solvent Bottles, Solvent Packaging Options, Solvent by Application, Solvents,
grade   anhydrous
vapor density   2.6 (vs air)
vapor pressure   11.17 psi ( 20 °C)
InChI Key   QWTDNUCVQCZILF-UHFFFAOYSA-N
assay   ≥99%
autoignition temp.   788 °F
expl. lim.   8.3 %
impurities   <0.001% water
  <0.005% water (100 mL pkg)
evapn. residue   <0.0003%
refractive index   n20/D 1.354 (lit.)
bp   30 °C (lit.)
mp   -160 °C
density   0.62 g/mL at 25 °C (lit.)
storage temp.   2-8°C

Description

Application

2-Methylbutane undergoes catalytic dehydrogenation in the presence of chromia-alumina catalyst to form isoamylenes, which can undergo further dehydrogenation to form isoprene. It may also be used as a solvent in the preparation of trans-Bis(triethylphosphine) (hydroxy carbonyl) (phenyl) platinum(II), a metallacarboxylic acid.

Packaging

1 L in Sure/Seal™

100 mL in Sure/Seal™

Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
Precautionary statements 
Supplemental Hazard Statements 
Repeated exposure may cause skin dryness or cracking.
RIDADR 
UN1265 - class 3 - PG 1 - Pentanes
WGK Germany 
2
RTECS 
EK4430000
Flash Point(F) 
-59.8 °F
Flash Point(C) 
-51 °C

Documents

Certificate of Analysis

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Certificate of Origin

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Dispensette™ S
Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

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Pressure-Temperature Nomograph Interactive Tool

Use the interactive controls above to simplify calculations and improve the efficiency of your distillation or evaporation requirements.
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Properties of Solvents Table

The table below presents the physical characteristics of common solvents. Easily reference or compare solvent properties like boiling point, density, and refractive index all from one list.
Keywords: Gas chromatography, Green chemistry, High performance liquid chromatography, Melting, Solvents

Peer-Reviewed Papers
15

References

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