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32287 Sigma-Aldrich

Heptane

Green Alternative

puriss. p.a., reag. Ph. Eur., ≥99% n-heptane basis (GC)

  • CAS Number 142-82-5

  • Linear Formula CH3(CH2)5CH3

  • Molecular Weight 100.20

  •  Beilstein/REAXYS Number 1730763

  •  EC Number 205-563-8

  •  MDL number MFCD00009544

  •  PubChem Substance ID 329754124

  •  NACRES NA.06

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Properties

Related Categories Amber Glass Bottles, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, E-H, Puriss p.a.,
Agency/Method   reag. Ph. Eur.
Quality Level   200
vapor density   3.5 (vs air)
vapor pressure   40 mmHg ( 20 °C)
  83 mmHg ( 37.7 °C)
grade   puriss. p.a.
assay   ≥99% n-heptane basis (GC)
form   liquid
autoignition temp.   433 °F
expl. lim.   7 %
greener alternative product characteristics   Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.
application(s)   microbiology: suitable
impurities   ≤0.0005% free acid (as CH3COOH)
  ≤0.001% non-volatile matter
  ≤0.005% S-compounds (as S)
  ≤0.01% water (Karl Fischer)
refractive index   n20/D 1.387 (lit.)
  n20/D 1.3870-1.3880
bp   98 °C (lit.)
mp   −91 °C (lit.)
density   0.684 g/mL at 25 °C (lit.)
cation traces   Al: ≤0.5 mg/kg
  B: ≤0.02 mg/kg
  Ba: ≤0.1 mg/kg
  Ca: ≤0.5 mg/kg
  Cd: ≤0.05 mg/kg
  Co: ≤0.02 mg/kg
  Cr: ≤0.02 mg/kg
  Cu: ≤0.02 mg/kg
  Fe: ≤0.1 mg/kg
  Mg: ≤0.1 mg/kg
  Mn: ≤0.02 mg/kg
  Ni: ≤0.02 mg/kg
  Pb: ≤0.1 mg/kg
  Sn: ≤0.1 mg/kg
  Zn: ≤0.1 mg/kg
suitability   passes test for reaction against H2SO4
SMILES string   CCCCCCC
greener alternative category   Aligned
InChI   1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
InChI key   IMNFDUFMRHMDMM-UHFFFAOYSA-N

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. Heptane is an environmentally preferable solvent and greener alternative to hexane and thus has been enhanced for "Safer Solvents and Auxiliaries". Click here for more information.
Heptane (n-Heptane) is a linear hydrocarbon. Its cetane number has been reported to be 56. Mechanism and kinetic studies of its oxidation in flow reactors, shock tubes and rapid compression machines have been proposed.

Application

Greener alternatives to Hexane.

Heptane may be used in the following studies:
• To compose the water/sodium bis(2-ethylhexyl) sulfosuccinate (AOT)/n-heptane microemulsions, employed for the synthesis of ZnS nanoparticles.
• As a solvent for various solid n-paraffins.
• Sterol quantification method (SQM) for the determination of total intracellular ergosterol in Aspergillus fumigatus extracts.

Features and Benefits

Greener alternative for hexane

Other Notes

The article number 32287-4X2.5L will be discontinued. Please order the single bottle 32287-2.5L which is physically identical with the same exact specifications.
The article number 32287-4X2.5L-M will be discontinued. Please order the single bottle 32287-2.5L-M which is physically identical with the same exact specifications.
The article number 32287-6X1L will be discontinued. Please order the single bottle 32287-1L which is physically identical with the same exact specifications.
The article number 32287-6X1L-M will be discontinued. Please order the single bottle 32287-1L-M which is physically identical with the same exact specifications.

Pertains only in Germany: unversteuert

Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
Target organs 
Central nervous system
RIDADR 
UN1206 - class 3 - PG 2 - Heptanes
WGK Germany 
WGK 2
RTECS 
MI7700000
Flash Point(F) 
24.8 °F
Flash Point(C) 
-4 °C
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...

Peer-Reviewed Papers
15

References

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