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Merck
CN

80833

18-Crown-6

greener alternative

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:
17455-13-9
Molecular Weight:
264.32
EC Number:
241-473-5
UNSPSC Code:
12352005
NACRES:
NB.21
Beilstein/REAXYS Number:
1619616
MDL number:
MFCD00005113

Key Documents

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Product Name

18-Crown-6, suitable for ion chromatography, ≥99.0% (GC)

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

SMILES string

O1CCOCCOCCOCCOCCOCC1

assay

≥99.0% (GC)

form

solid

Quality Level

100

greener alternative product characteristics

Catalysis
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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

greener alternative category

Aligned

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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.

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.
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Other Notes

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Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis
Macrocyclic polyethers with repeating (-CH2CH2O) units. The compounds are ionophoric (form stable complexes with cations).

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN4614
BCCL7061
BCCK8246
BCCH5618
BCCH0028

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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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