80833

18-Crown-6

suitable for ion chromatography, ≥99.0% (GC)

• Sinonimo/i: 1,4,7,10,13,16-Hexaoxacyclooctadecane
• Formula empirica (notazione di Hill): C₁₂H₂₄O₆
• Numero CAS: 17455-13-9
• Peso molecolare: 264.32
• Beilstein: 1619616
• Numero CE: 241-473-5
• Numero MDL: MFCD00005113
• Codice UNSPSC: 12352005
• NACRES: NB.21

Proprietà

• Livello qualitativo: 100
• Saggio: ≥99.0% (GC)
• Forma fisica: solid
• tecniche: ion chromatography: suitable
• Punto di fusione: 42-45 °C (lit.)
• Cationi in tracce: 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
• Stringa SMILE: 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; XEZNGIUYQVAUSS-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Altre note

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

Linkage

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Note legali

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Informazioni sulla sicurezza

• Pittogrammi: GHS07
• Avvertenze: Warning
• Indicazioni di pericolo: H302
• Consigli di prudenza: P301 + P312 + P330
• Classi di pericolo: Acute Tox. 4 Oral
• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable