34861-M

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/REAXYS Number: 741880
• EC Number: 201-159-0
• MDL number: MFCD00011648
• UNSPSC Code: 41116105
• NACRES: NA.07

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); ≤0.1% water
• evapn. residue: ≤0.001%
• refractive index: n20/D 1.379 (lit.)
• bp: 80 °C (lit.)
• mp: −87 °C (lit.)
• density: 0.805 g/mL at 25 °C (lit.)
• UV absorption: λ: 335 nm A_max: ≤0.3; λ: 340 nm A_max: ≤0.1; λ: 350 nm A_max: ≤0.01
• SMILES string: CC(CC)=O
• InChI: 1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
• InChI key: ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H225,H319,H336
• pcodes: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
• target_organs: Central nervous system
• supp_hazards: EUH066
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 30.2 °F - closed cup
• flash_point_c: -1 °C - closed cup