676926

2-Butanone

ACS reagent, ≥99.0%

• 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: 12352115
• eCl@ss: 39021202
• PubChem Substance ID: 329760661
• NACRES: NA.21
• grade: ACS reagent
• bp: 80 °C (lit.)
• vapor pressure: 71 mmHg ( 20 °C)

Properties

• grade: ACS reagent
• vapor density: 2.49 (vs air)
• vapor pressure: 71 mmHg ( 20 °C)
• Assay: ≥99.0%
• form: liquid
• autoignition temp.: 960 °F
• expl. lim.: 10.1 %
• dilution: (for analytical testing)
• impurities: ≤0.0005 meq/g Titr. acid; ≤0.20% water
• evapn. residue: ≤0.0025%
• color: APHA: ≤15
• refractive index: n20/D 1.379 (lit.)
• bp: 80 °C (lit.)
• mp: −87 °C (lit.)
• density: 0.805 g/mL at 25 °C (lit.)
• SMILES string: CC(CC)=O
• InChI: 1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
• InChI key: ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Description

General description

2-Butanone is a ketone. 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.[1]

Application

2-Butanone (Methyl ethyl ketone) may be employed as 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).[2] It may be used in the synthesis of nanocontainer composed of 6 bowl-shaped cavitands. In the nanocontainer, cavitands were joined by 12 -CH=N-CH₂CH₂-N=CH- linkers.[3]

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