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34862 Sigma-Aldrich

2,2,4-Trimethylpentane

for HPLC, ≥99%

Synonym: Isooctane

  • CAS Number 540-84-1

  • Linear Formula (CH3)2CHCH2C(CH3)3

  • Molecular Weight 114.23

  •  Beilstein/REAXYS Number 1696876

  •  EC Number 208-759-1

  •  MDL number MFCD00008943

  •  PubChem Substance ID 329755071

  •  NACRES NA.21

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Chromatography Reagents & Solvents, HPLC Grade Solvents, HPLC Solvents,
Quality Level   100
grade   for HPLC
vapor density   3.9 (vs air)
vapor pressure   41 mmHg ( 21 °C)
assay   ≥99%
form   liquid
autoignition temp.   745 °F
expl. lim.   6 %
application(s)   HPLC: suitable
impurities   ≤0.0005% non-volatile matter
  ≤0.001% free acid (as CH3COOH)
  ≤0.01% water (Karl Fischer)
transmittance   210 nm, ≥20%
  235 nm, ≥80%
  270 nm, ≥98%
refractive index   n20/D 1.391 (lit.)
bp   98-99 °C (lit.)
mp   −107 °C (lit.)
density   0.692 g/mL at 25 °C (lit.)
Featured Industry   Food and Beverages
SMILES string   CC(C)CC(C)(C)C
InChI   1S/C8H18/c1-7(2)6-8(3,4)5/h7H,6H2,1-5H3
InChI key   NHTMVDHEPJAVLT-UHFFFAOYSA-N

Description

General description

2,2,4-Trimethylpentane (TMP, Isooctane) is a saturated, branched hydrocarbon. It has been reported to be nephrotoxic to male rats. Density and viscosity of TMP at various temperatures (198K - 348K) and pressures (100MPa) has been evaluated. It has been indentified as nephrotoxicity inducing component in unleaded gasoline.

Application

2,2,4-Trimethylpentane (TMP, Isooctane) has been used for the isolation of mercury species during the HPLC cold vapor atomic fluorescence spectrometric (HPLC-CVAFS) quantification of MeHg in various biological samples. It may be used to evaluate various physical properties (densities, viscosities, refractive indexes and surface tensions) of the binary mixtures of TMP and cyclohexane.

Packaging

1, 6×1, 2, 4×2, 4×4 L in glass bottle

100 mL in glass bottle

Other Notes

Important notice
The article number 34862-4X2.5L will be discontinued. Please order the single bottle 34862-2.5L which is physically identical with the same exact specifications.

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Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
Target organs 
Central nervous system
RIDADR 
UN1262 - class 3 - PG 2 - Octanes
WGK Germany 
WGK 2
RTECS 
SA3320000
Flash Point(F) 
10.4 °F - closed cup
Flash Point(C) 
-12 °C - closed cup
Protocols & Articles

Articles

GC Analysis of Hydrocarbons in Gasoline on Equity®-1 (15 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

From our library of Articles, Sigma-Aldrich presents GC Analysis of Hydrocarbons in Gasoline on Equity®-1 (15 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Size-exclusion chromatography

GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH, Isothermal

From our library of Articles, Sigma-Aldrich presents GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH, Isothermal
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification, Separation

GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH

From our library of Articles, Sigma-Aldrich presents GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification, Size-exclusion chromatography

GC Analysis of an Indoor Air Standard on Equity®-1

From our library of Articles, Sigma-Aldrich presents GC Analysis of an Indoor Air Standard on Equity®-1
Keywords: Air Monitoring, Chromatography, Gas chromatography, Purification, Size-exclusion chromatography

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...

US EPA Method 8015 (modified): GC Analysis of Gasoline Range Organics (GRO) on Equity®-1 after Purge & Trap using "M" Trap

From our library of Articles, Sigma-Aldrich presents US EPA Method 8015 (modified): GC Analysis of Gasoline Range Organics (GRO) on Equity®-1 after Purge & Trap using "M" Trap
Keywords: Chromatography, Environmental, Flame ionization detector, Gas chromatography, Purification, Solid phase microextractions

US EPA Method 8015 (modified): GC Analysis of Gasoline Range Organics (GRO) on VOCOL® after Purge & Trap using "M" Trap

From our library of Articles, Sigma-Aldrich presents US EPA Method 8015 (modified): GC Analysis of Gasoline Range Organics (GRO) on VOCOL® after Purge & Trap using "M" Trap
Keywords: Chromatography, Environmental, Flame ionization detector, Gas chromatography, Purification, Solid phase microextractions

Peer-Reviewed Papers
15

References

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