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Acetone

Organic compound ((CH3)2CO); simplest ketoneSample of acetoneNames IUPAC nameAcetonePreferred IUPAC namePropan-2-oneSystematic IUPAC namePropan-2-oneOther names Acetonum (Latin pronunciation:)Dimethyl ketoneDimethyl carbonylKetone propaneβ-KetopropanePropanonePyroacetic spirit (archaic)Spirit of Saturn (archaic)Identifiers CAS Number67-64-13D model (JSmol)Interactive imageAbbreviations Me2CO Beilstein Reference635680 ChEBICHEBI:15347ChEMBLChEMBL14253ChemSpider175ECHA InfoCard100.000.602EC Number200-662-2Gmelin Reference1466 KEGGD02311MeSHAcetonePubChemCID180RTECS numberAL3150000UNII1364PS73AFUN number1090 CompTox Dashboard(EPA)DTXSID8021482InChIInChI=1S/C3H6O/c1-3(2)4/h1-2H3Key: CSCPPACGZOOCGX-UHFFFAOYSA-NInChI=1/C3H6O/c1-3(2)4/h1-2H3Key: CSCPPACGZOOCGX-UHFFFAOYAFSMILESCC(=O)CProperties Chemical formulaC3H6OMolar mass58.080 g·mol Appearance Colourless liquid OdorPungent, fruity, dry Density0.7845 g/cm (25 °C) Melting point−94.9 °C (−138.8 °F; 178.2 K) Boiling point56.08 °C (132.94 °F; 329.23 K) Critical point (T, P) 508 K (235 °C), 48 bar Solubility in waterMiscible SolubilityMiscible in benzene, diethyl ether, methanol, chloroform, ethanollog P−0.24 Vapor pressure9.39 kPa (0 °C)30.6 kPa (25 °C)374 kPa (100 °C)2.8 MPa (200 °C)Acidity (pKa) 19.16 (H2O)26.5 (DMSO)Magnetic susceptibility (χ)−33.8·10 cm/mol Thermal conductivity0.161 W/(m·K) (25 °C) Refractive index (nD)1.3588 (20 °C) Viscosity0.4013 mPa·s (0 °C)0.3311 mPa·s at 20 °C0.306 mPa·s (25 °C)0.2562 mPa·s at 50 °C Structure Coordination geometryTrigonal planar at C2 Molecular shapeDihedral at C2 Dipole moment2.88 D Thermochemistry Heat capacity(C)126.3 J/(mol·K) (liquid)75 J/(mol·K) (gas)96 J/(mol·K) (solid) Std molarentropy(S298)199.8 J/(mol·K) (liquid)295.35 J/(mol·K) (gas) Std enthalpy offormation(ΔfH298)−248.4 kJ/mol (liquid)−218.5 kJ/mol (gas) Std enthalpy ofcombustion(ΔcH298)−1.79 MJ/mol Enthalpy of fusion(ΔfHfus)+5.7 kJ/mol Enthalpy of vaporization(ΔfHvap)+30.3 kJ/mol Hazards Occupational safety and health (OHS/OSH): Main hazardsHighly flammable GHS labelling: PictogramsSignal wordDangerHazard statementsH225, H302, H319, H336, H373Precautionary statementsP210, P235, P260, P305+P351+P338NFPA 704 (fire diamond) 130Flash point−20 °C (−4 °F; 253 K) Autoignitiontemperature465 °C (869 °F; 738 K) Explosive limits2.5–12.8% Threshold limit value (TLV)250 ppm (STEL), 500 ppm (C) Lethal dose or concentration (LD, LC): LD50 (median dose)5800 mg/kg (rat, oral)3000 mg/kg (mouse, oral)5340 mg/kg (rabbit, oral)LC50 (median concentration)20,702 ppm (rat, 8 h) LCLo (lowest published)45,455 ppm (mouse, 1 h) NIOSH (US health exposure limits): PEL (Permissible)1000 ppm (2400 mg/m) REL (Recommended)TWA 250 ppm (590 mg/m) IDLH (Immediate danger)2500 ppm Related compounds Related compoundsButanoneIsopropyl alcoholFormaldehydeUreaCarbonic acidSupplementary data page Acetone (data page)Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Y verify ( ?)

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