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80833

18-Crown-6

Name: 18-Crown-6
Brand: SIAL

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

Assay:

≥99.0% (GC)

Form:

solid

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Properties

Quality Level

100

assay

≥99.0% (GC)

form

solid

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

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

Description

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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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

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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

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pictograms

GHS07

signalword

Warning

hcodes

H302

pcodes

P301 + P312 + P330

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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