80833

18-Krone-6

suitable for ion chromatography, ≥99.0% (GC)

• Synonym(e): 1,4,7,10,13,16-Hexaoxacyclooctadecan
• Empirische Formel (Hill-System): C₁₂H₂₄O₆
• CAS-Nummer: 17455-13-9
• Molekulargewicht: 264.32
• Beilstein: 1619616
• EG-Nummer: 241-473-5
• MDL-Nummer: MFCD00005113
• UNSPSC-Code: 12352005
• NACRES: NB.21

Eigenschaften

• Qualitätsniveau: 100
• Assay: ≥99.0% (GC)
• Form: solid
• Methode(n): ion chromatography: suitable
• mp (Schmelzpunkt): 42-45 °C (lit.)
• Kationenspuren: 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
• InChIKey: XEZNGIUYQVAUSS-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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

Kann als Phasentransferkatalysator eingesetzt werden.

Sonstige Hinweise

Makrozyklische Polyether mit sich wiederholenden (-CH₂CH₂O) Einheiten. Die Verbindungen sind ionophor (bilden stabile Komplexe mit Kationen).

Verlinkung

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Rechtliche Hinweise

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H302
• P-Sätze: P301 + P312 + P330
• Gefahreneinstufungen: Acute Tox. 4 Oral
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable