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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 Registry 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

Packaging

1 L in Sure/Seal™

100 mL in Sure/Seal™

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.

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

Certificate of Origin


LC-MS Grade Solvents and Reagents
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...

Related Content

Pressure-Temperature Nomograph Interactive Tool

The Pressure-Temperature Nomograph tool is an application of the Clausius-Clapeyron Equation, which assumes the heat of vaporization is a constant over a pressure range. Antoine´s Equation gets aroun...
Keywords: Evaporation, Vaporization

Properties of Solvents Table

a. Gant, R., LC/GC 10 (7), 515 (1992) 1. At 20 °C 2. At 20 °C +/- 5 °C relative to water at 4 °C 3. At 10 mmHg pressure 4. At l=589.32 nm
Keywords: Gas chromatography, High performance liquid chromatography

Peer-Reviewed Papers
15

References

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