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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 recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.

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Structure and properties

Structure and properties
Index of refraction, nD	1.3561
Dielectric constant, εr	20.7 ε0 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, ΔfusHo	+5.7 kJ/mol
Std entropy change of fusion, ΔfusSo	+32.3 J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	+31.3 kJ/mol
Std entropy change of vaporization, ΔvapSo	95 J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	? kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	−249.4 kJ/mol
Standard molar entropy, Soliquid	200.4 J/(mol K)
Enthalpy of combustion, ΔcHo	–1785.7 kJ/mol
Heat capacity, cp	125.5 J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas	−218.5 kJ/mol
Standard molar entropy, Sogas	? J/(mol K)
Heat capacity, cp	75 J/(mol K)
van der Waals' constants	a = 1409.4 L2 kPa/mol2 b = 0.0994 liter per mole

Vapor pressure of liquid

P in mm Hg	1	10	40	100	400	760	1520	3800	7600	15200	30400	45600
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 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 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 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
λmax	280 nm
Extinction coefficient, ε	12.4 L/(mol·cm) @ 280 nm
IR
Major absorption bands	(liquid film) Wave number Transmittance 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	(CDCl3, 300 MHz) δ 2.16 (s, 6H)
Carbon-13 NMR	(CDCl3, 25 MHz) δ 206.6, 30.8
Other NMR data
MS
Masses of main fragments

References

• Template:Nist

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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