title: Acetone (data page)
text: # Acetone (data page)
  
  This page provides supplementary chemical data on acetone.
  
  ## Material Safety Data Sheet
  
  The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.
  
  * Mallinckrodt Baker
  * Science Stuff
  
  ## Structure and properties
  
  Structure and properties :
  
  | Index of refraction, $n_D$ | 1.3561 |
  | - | - |
  | Dielectric constant, $ε_r$ | 20.7 $ε_0$ at 25 °C |
  | Bond strength | ? |
  | Bond length | ? |
  | Bond angle | ? |
  | Magnetic susceptibility | ? |
  | Surface tension | 26.2 dyn/cm at 0° 23.7 dyn/cm at 20 °C |
  | Viscosity | 0.4013 mPa·s at 0 °C 0.3311 mPa·s at 20 °C 0.2562 mPa·s at 50 °C |
  
  ## Thermodynamic properties
  
  Phase behavior :
  
  | Triple point | 178.5 K (−94.3 °C), ? Pa |
  | - | - |
  | Critical point | 508 K (235 °C), 48 bar |
  | Std enthalpy change of fusion, $Δ_{fus}H^o$ | +5.7 kJ/mol |
  | Std entropy change of fusion, $Δ_{fus}S^o$ | +32.3 J/(mol·K) |
  | Std enthalpy change of vaporization, $Δ_{vap}H^o$ | +30.3 kJ/mol |
  | Std entropy change of vaporization, $Δ_{vap}S^o$ | 95 J/(mol·K) |
  | Solid properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{solid}$ | ? kJ/mol |
  | Standard molar entropy, $S^o_{solid}$ | ? J/(mol K) |
  | Heat capacity, $c_p$ | 96 J/(mol K) |
  | Liquid properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{liquid}$ | −249.4 kJ/mol |
  | Standard molar entropy, $S^o_{liquid}$ | 200.4 J/(mol K) |
  | Enthalpy of combustion, $Δ_cH^o$ | –1785.7 kJ/mol |
  | Heat capacity, $c_p$ | 125.5 J/(mol K) |
  | Gas properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{gas}$ | −218.5 kJ/mol |
  | Standard molar entropy, $S^o_{gas}$ | 295.35 J/(mol K) |
  | Heat capacity, $c_p$ | 75 J/(mol K) |
  | van der Waals' constants | a = 1409.4 $L^2$ $kPa/mol^2$ b = 0.0994 liter per mole |
  
  ## Vapor pressure of liquid
  
  | P in mm Hg | P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 | 1520 | 3800 | 7600 | 15200 | 30400 | 45600 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | T in °C | T in °C | –59.4 | –31.1 | –9.4 | 7.7 | 39.5 | 56.5 | 78.6 | 113.0 | 144.5 | 181.0 | 214.5 | — |
  
  Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
  
  | Vapor pressure of acetone based on formula, $\scriptstyle P_{mmHg}=10^{7.02447-{\frac {1161.0}{224+T}}}$ from Lange's Handbook of Chemistry, 10th ed. | vapor pressure of acetone (log scale) based on formula, $\scriptstyle \log _{10}P_{mmHg}=7.02447-{\frac {1161.0}{224+T}}$ from Lange's Handbook of Chemistry, 10th ed. |
  | - | - |
  
  ## Distillation data
  
  See also:
  
  * Carbon tetrachloride (data page)
  * Butanone (data page)
  
  Vapor-liquid Equilibrium of Acetone/water P = 760 mmHg :
  
  | BP Temp. °C | % by mole acetone | % by mole acetone |
  | - | - | - |
  | BP Temp. °C | liquid | vapor |
  | 100.00 | 0.0 | 0.0 |
  | 87.8 | 1.0 | 33.5 |
  | 83.0 | 2.3 | 46.2 |
  | 76.5 | 4.1 | 58.5 |
  | 75.38 | 5.0 | 63.1 |
  | 68.76 | 10.0 | 73.1 |
  | 66.2 | 12.0 | 75.6 |
  | 63.98 | 20.0 | 79.2 |
  | 61.84 | 30.0 | 82.0 |
  | 60.73 | 40.0 | 83.4 |
  | 59.87 | 50.0 | 84.8 |
  | 59.29 | 60.0 | 85.8 |
  | 58.52 | 70.0 | 87.4 |
  | 57.65 | 80.0 | 89.4 |
  | 57.1 | 85.0 | 91.8 |
  | 56.65 | 90.0 | 93.8 |
  | 56.36 | 95.0 | 96.3 |
  | 56.09 | 100.0 | 100.0 |
  
  Vapor-liquid Equilibrium of Acetone/Methanol P = 101.325 kPa :
  
  | BP Temp. °C | % by mole methanol | % by mole methanol |
  | - | - | - |
  | BP Temp. °C | liquid | vapor |
  | 55.67 | 7.0 | 8.2 |
  | 55.43 | 13.3 | 14.4 |
  | 55.31 | 18.1 | 18.8 |
  | 55.24 | 21.7 | 21.8 |
  | 55.25 | 22.7 | 22.6 |
  | 55.30 | 26.5 | 25.5 |
  | 55.39 | 34.0 | 31.1 |
  | 55.74 | 40.6 | 35.6 |
  | 55.96 | 44.6 | 38.2 |
  | 56.15 | 48.1 | 40.6 |
  | 56.90 | 59.3 | 48.6 |
  | 57.05 | 60.6 | 49.6 |
  | 57.29 | 63.1 | 51.5 |
  | 57.69 | 67.6 | 55.0 |
  | 58.32 | 71.9 | 59.0 |
  | 58.49 | 73.7 | 60.8 |
  | 58.97 | 77.1 | 64.3 |
  | 59.57 | 80.5 | 68.1 |
  | 60.41 | 84.9 | 73.5 |
  | 61.53 | 90.0 | 80.9 |
  | 62.21 | 92.6 | 85.2 |
  | 62.79 | 94.7 | 89.0 |
  | 63.69 | 97.6 | 94.7 |
  
  Vapor-liquid Equilibrium of Acetone/Ethanol P = 760 mm Hg :
  
  | BP Temp. °C | % by mole acetone | % by mole acetone |
  | - | - | - |
  | BP Temp. °C | liquid | vapor |
  | 78.3 | 0 | 0 |
  | 76.4 | 3.3 | 11.1 |
  | 74.0 | 7.8 | 21.6 |
  | 70.8 | 14.9 | 34.5 |
  | 69.1 | 19.5 | 41.0 |
  | 65.6 | 31.6 | 53.4 |
  | 63.4 | 41.4 | 61.4 |
  | 61.3 | 53.2 | 69.7 |
  | 59.0 | 69.1 | 79.6 |
  | 57.3 | 85.2 | 89.6 |
  | 56.1 | 100.0 | 100.0 |
  
  ## Spectral data
  
  UV-Vis :
  
  | $λ_{max}$ | 280 nm |
  | - | - |
  | Extinction coefficient, ε | 12.4 L/(mol·cm) @ 280 nm |
  | IR ||
  | Major absorption bands | (liquid film) Wave numberTransmittance 3414 $cm^{−1}78%$ 3005 $cm^{−1}66%$ 2966 $cm^{−1}74%$ 2925 $cm^{−1}77%$ 1749 $cm^{−1}52%$ 1715 $cm^{−1}4%$ 1434 $cm^{−1}49%$ 1421 $cm^{−1}47%$ 1363 $cm^{−1}13%$ 1223 $cm^{−1}12%$ 1093 $cm^{−1}68%$ 903 $cm^{−1}81%$ 531 $cm^{−1}36%$ |
  | NMR ||
  | Proton NMR | $(CDCl_3,$ 300 MHz) δ 2.16 (s, 6H) |
  | Carbon-13 NMR | $(CDCl_3,$ 25 MHz) δ 206.6, 30.8 |
  | Other NMR data | |
  | MS ||
  | Masses of main fragments | |
  