34861

2-Butanone

suitable for HPLC, ≥99.7%

• Synonym(s): Ethyl methyl ketone, MEK, Methyl ethyl ketone
• Linear Formula: C₂H₅COCH₃
• CAS Number: 78-93-3
• Molecular Weight: 72.11
• Beilstein: 741880
• EC Number: 201-159-0
• MDL number: MFCD00011648
• UNSPSC Code: 41116105
• eCl@ss: 39021202
• PubChem Substance ID: 329755070

Properties

• vapor density: 2.49 (vs air)
• vapor pressure: 71 mmHg ( 20 °C)
• Assay: ≥99.7%
• form: liquid
• autoignition temp.: 960 °F
• expl. lim.: 10.1 %
• technique(s): HPLC: suitable
• impurities: ≤0.001% free acid (as CH₃COOH); ≤0.001% non-volatile matter; ≤0.1% water (Karl Fischer)
• evapn. residue: ≤0.001%
• transmittance: 335 nm, ≥50%; 340 nm, ≥80%; 350 nm, ≥98%
• refractive index: n20/D 1.379 (lit.)
• bp: 80 °C (lit.)
• mp: −87 °C (lit.)
• density: 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
• application(s): food and beverages
• SMILES string: CC(CC)=O
• InChI: 1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
• InChI key: ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Description

General description

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.

Application

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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Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H319,H336
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
• Target Organs: Central nervous system
• Supplementary Hazards: EUH066
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): 30.2 °F - closed cup
• Flash Point(C): -1 °C - closed cup