34861

2-Butanon

suitable for HPLC, ≥99.7%

• Synonym(e): Ethyl-methylketon, MEK, Methyl-ethylketon
• Lineare Formel: C₂H₅COCH₃
• CAS-Nummer: 78-93-3
• Molekulargewicht: 72.11
• Beilstein: 741880
• EG-Nummer: 201-159-0
• MDL-Nummer: MFCD00011648
• UNSPSC-Code: 41116105
• eCl@ss: 39021202
• PubChem Substanz-ID: 329755070

Eigenschaften

• Dampfdichte: 2.49 (vs air)
• Qualitätsniveau: 100
• Dampfdruck: 71 mmHg ( 20 °C)
• Assay: ≥99.7%
• Form: liquid
• Selbstzündungstemp.: 960 °F
• Expl.-Gr.: 10.1 %
• Methode(n): HPLC: suitable
• Verunreinigungen: ≤0.001% free acid (as CH₃COOH); ≤0.001% non-volatile matter; ≤0.1% water (Karl Fischer)
• Abdampfrückstand: ≤0.001%
• Durchlässigkeit: 335 nm, ≥50%; 340 nm, ≥80%; 350 nm, ≥98%
• Brechungsindex: n20/D 1.379 (lit.)
• bp: 80 °C (lit.)
• mp (Schmelzpunkt): −87 °C (lit.)
• Dichte: 0.805 g/mL at 25 °C (lit.)
• λ: neat
• UV-Absorption: λ: 335 nm A_max: ≤0.30; λ: 340 nm A_max: ≤0.10; λ: 350 nm A_max: ≤0.01
• Anwendung(en): food and beverages
• SMILES String: CC(CC)=O
• InChI: 1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
• InChIKey: ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Physical properties of the solutions of 1-n-butyl-3-methylimidazolium tetrafluoroborate (ionic liquid) in various organic solvents (acetonitrile, dichloromethane, 2-butanone and N,N-dimethylformamide) has been studied. Viscosity and density of these mixtures were evaluated at 298.15K.

Anwendung

2-Butanone may be employed as a solvent for the methylation agent [¹¹C]methyl trifluoromethanesulfonate ([¹¹C]CH₃OTf), during the completely automated radiosynthesis of 2-(4-N-[¹¹C]methylaminophenyl)-6-hydroxybenzothiazole ([¹¹C]PIB).

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Sicherheitshinweise

• Piktogramme: GHS02,GHS07
• Signalwort: Danger
• H-Sätze: H225,H319,H336
• P-Sätze: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
• Zielorgane: Central nervous system
• Zusätzliche Gefahrenhinweise: EUH066
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 1
• Flammpunkt (°F): 30.2 °F - closed cup
• Flammpunkt (°C): -1 °C - closed cup