650536
Heptane
HPLC Plus, for HPLC, GC, and residue analysis, 99%
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A propos de cet article
InChI key
IMNFDUFMRHMDMM-UHFFFAOYSA-N
InChI
1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
SMILES string
CCCCCCC
grade
HPLC Plus
vapor density
3.5 (vs air)
vapor pressure
40 mmHg ( 20 °C), 83 mmHg ( 37.7 °C)
assay
≥98.5% (GC), 99%
form
liquid
autoignition temp.
433 °F
expl. lim.
7 %
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technique(s)
HPLC: suitable, gas chromatography (GC): suitable
impurities
≤0.0001% non-volatiles, ≤0.01% water (Karl Fischer), ≤1.0 ppb Fluorescence (quinine) at 365 nm
halogenated residue
≤2 μg/L (as heptachlor epoxide)
refractive index
n20/D 1.3850-1.3890, n20/D 1.387 (lit.)
Quality Level
mp
−91 °C (lit.)
solubility
acetone: miscible(lit.), carbon tetrachloride: soluble(lit.), ethanol: very soluble(lit.), water: insoluble(lit.)
density
0.684 g/mL at 25 °C (lit.)
λ
H2O reference
UV absorption
λ: 200 nm Amax: ≤1.0, λ: 225 nm Amax: ≤0.10, λ: 250 nm Amax: ≤0.01, λ: 300-400 nm Amax: ≤0.005
suitability
corresponds for IR spectroscopy, suitable for residue analysis
application(s)
food and beverages
greener alternative category
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General description
Heptane (n-Heptane) is a primary reference fuel (PRF) for the rating of octane numbers of fuels in internal combustion engines. 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. Its thermal decomposition has been studied under different conditions of temperature and pressure. Its oxidative dehydrogenation in the presence of magnesium oxide supported vanadium catalyst has been investigated. Molybdenum phosphide supported on Hβ zeolite (MoP/Hβ) catalyzed hydroisomerization of n-heptane has been reported to be enhanced by doping with secondary metals (Cr, Ni or Ce).
Application
Spectrophotometry.
Environmental testing.
- To compose the solvent mixtures for the purification of N-acylpyrrolidine derivatives of fatty acid methyl esters (FAMEs) by TLC (Thin Layer Chromatography).
- To generate chiral alcohols and heptanones, via whole cell double oxidation.
- As a solvent in the synthesis of isopropyl acetate, via esterification of acetic acid with isopropyl alcohol catalyzed by lipase immobilized on silica.
Features and Benefits
Packaging
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Other Notes
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Central nervous system
Classe de stockage
3 - Flammable liquids
wgk
WGK 2
flash_point_f
24.8 °F - closed cup
flash_point_c
-4 °C - closed cup
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