443468

2-Butanon

ACS reagent, ≥99.0%

• 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: 12190000

Eigenschaften

• Qualität: ACS reagent
• Dampfdichte: 2.49 (vs air)
• Dampfdruck: 71 mmHg ( 20 °C)
• Assay: ≥99.0%
• Selbstzündungstemp.: 960 °F
• Expl.-Gr.: 10.1 %
• Verunreinigungen: ≤0.0005 meq/g Titr. acid; ≤0.20% water
• Abdampfrückstand: ≤0.0025%
• Farbe: APHA: ≤15
• Brechungsindex: n20/D 1.379 (lit.)
• bp: 80 °C (lit.)
• mp (Schmelzpunkt): −87 °C (lit.)
• Dichte: 0.805 g/mL at 25 °C (lit.)
• SMILES String: CC(CC)=O
• InChI: 1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
• InChIKey: ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

2-Butanone (Methyl ethyl ketone, MEK), an aliphatic ketone, is considered as aprotic and protophilic solvent. The solvent composition plays an important role in the rate of liquid-phase catalytic hydrogenation of MEK to 2-butanol. The rate constant for the reaction of hydroxyl radicals with MEK has been determined and expressed in Arrhenius form as Κ_C2H5COCH3+OH = 6.35*1013 exp(-2270/T) cm³mol^-1s^-1.

Anwendung

2-Butanone may be used as an oxidizing agent for the conversion of primary alcohols to the corresponding aldehydes via Oppenauer oxidation in the presence of an iridium complex.

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
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter