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80833

Supelco

18-Crown-6

suitable for ion chromatography, ≥99.0% (GC)

Synonym(s):

1,4,7,10,13,16-Hexaoxacyclooctadecane

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About This Item

Empirical Formula (Hill Notation):
C12H24O6
CAS Number:
Molecular Weight:
264.32
Beilstein:
1619616
EC Number:
MDL number:
UNSPSC Code:
12352005
NACRES:
NB.21

Quality Level

Assay

≥99.0% (GC)

form

solid

technique(s)

ion chromatography: suitable

mp

42-45 °C (lit.)

cation traces

Al: ≤1 mg/kg
Ba: ≤1 mg/kg
Bi: ≤1 mg/kg
Ca: ≤1 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Mo: ≤1 mg/kg
NH4+: ≤10 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sr: ≤1 mg/kg
Zn: ≤1 mg/kg

SMILES string

O1CCOCCOCCOCCOCCOCC1

InChI

1S/C12H24O6/c1-2-14-5-6-16-9-10-18-12-11-17-8-7-15-4-3-13-1/h1-12H2

InChI key

XEZNGIUYQVAUSS-UHFFFAOYSA-N

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General description

18-Crown-6 belongs to the class of Crown ethers, a group of macrocyclic polyethers, which have become valuable tools in organic synthesis, since they can solvate alkali, alkaline-earth and transition-metal cations in nonpolar, aprotic solvents. 18-Crown-6 is found to be most suitable for complexing with K+, NH4+ and Rb+ cations.

Application

18-Crown-6 may be used as a complexing agent, along with the mobile phase for the separation of alkali and alkaline earth metal and amine cations and its application for the direct analysis of ammonia from nitrogenase is studied. It may also be used as a complexing agent in the determination of inorganic and organic anions, alkali, alkaline earth and transition metal cations by capillary electrophoresis using contactless conductometric detector.
Learn more in the Product Information
Can be useful as phase-transfer catalysts.

Other Notes

Macrocyclic polyethers with repeating (-CH2CH2O) units. The compounds are ionophoric (form stable complexes with cations).

Linkage

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Simultaneous determination of inorganic and organic anions, alkali, alkaline earth and transition metal cations by capillary electrophoresis with contactless conductometric detection
Kuban P, et al.
Electrophoresis, 23(21), 3725-3734 (2002)
Use of mobile phase 18-crown-6 to improve peak resolution between mono-and divalent metal and amine cations in ion chromatography
Richens AD, et al.
Journal of Chromatography A, 1016(2), 155-164 (2003)

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