Isopropyl alcohol (data page)

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This page provides supplementary chemical data on isopropanol.

Contents

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 such as SIRI, and follow its directions.

Structure and properties

Structure and properties
Index of refraction, nD 1.3776 at 20°C
Abbe number ?
Dielectric constant, εr 18.23 ε0 at 25 °C
Bond strength  ?
Bond length  ?
Bond angle  ?
Magnetic susceptibility  ?
Surface tension 21.7 dyn/cm at 20°C
Viscosity[1] 4.5646 mPa·s at 0°C
2.3703 mPa·s at 20°C
1.3311 mPa·s at 40°C

Thermodynamic properties

Phase behavior
Triple point 184.9 K (–88.2 °C), ? Pa
Critical point 508.7 K (235.6 °C), 5370 kPa
Std enthalpy change
of fusion, ΔfusHo		 5.28 kJ/mol
Std entropy change
of fusion, ΔfusSo		 28.6 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 44.0 kJ/mol
Std entropy change
of vaporization, ΔvapSo		 124 J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		  ? kJ/mol
Standard molar entropy,
Sosolid		  ? J/(mol K)
Heat capacity, cp 0.212 J/(mol K) at –200°C
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 –318.2 kJ/mol
Standard molar entropy,
Soliquid		 180 J/(mol K)
Heat capacity, cp 154 J/(mol K) at 20°C-25°C
Gas properties
Std enthalpy change
of formation, ΔfHogas		 –261.1 kJ/mol
Standard molar entropy,
Sogas		 333 J/(mol K)
Heat capacity, cp 89.32 J/(mol K) at 25°C

Vapor pressure of liquid

P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600
T in °C –26.1 2.4 23.8 39.5 67.8 82.5 101.3 130.2 155.7 186.0 220.2  —

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

log10 of isopropanol vapor pressure. Uses formula: obtained from Lange's Handbook of Chemistry, 10th ed. Note that yellow area indicates region where plot disagrees with tabulated data above.
log10 of isopropanol vapor pressure. Uses formula: \scriptstyle \log_{10} P_{mmHg} = 6.66040 - \frac {813.055} {132.93+T} obtained from Lange's Handbook of Chemistry, 10th ed. Note that yellow area indicates region where plot disagrees with tabulated data above.


Distillation data

See also


Vapor-liquid Equilibrium
for Isopropanol/Water[2]
P = 760 mm Hg
BP
Temp.
°C		  % by mole isopropanol
liquid vapor
82.2 100.00 100.00
81.48 95.35 93.25
80.70 87.25 83.40
80.37 80.90 77.45
80.23 76.50 73.70
80.11 69.55 69.15
80.16 66.05 67.15
80.15 64.60 66.45
80.31 55.90 62.55
80.38 51.45 60.75
80.67 44.60 59.20
80.90 38.35 57.00
81.28 29.80 55.10
81.29 29.75 55.40
81.23 28.35 55.30
81.62 24.50 53.90
81.75 19.35 53.20
81.58 18.95 53.75
81.99 16.65 52.15
82.32 12.15 51.20
82.70 10.00 50.15
84.57 5.70 45.65
88.05 3.65 36.55
93.40 1.60 21.15
95.17 1.15 16.30
100.0 0.00 0.00
   
Vapor-liquid Equilibrium
for Isopropanol/Methanol[2]
P = 101.325 kPa
BP
Temp.
°C		  % by mole methanol
liquid vapor
64.37 100.0 100.0
67.34 81.26 90.32
67.64 79.45 89.10
69.54 68.64 81.73
70.77 61.72 76.52
71.88 55.96 71.76
72.78 51.03 67.78
73.80 46.34 63.08
74.85 39.75 56.21
75.65 35.50 51.62
76.36 31.71 46.91
77.93 23.79 35.98
78.67 19.49 30.22
79.45 15.45 24.40
80.04 12.30 19.56
80.57 9.30 14.66
80.82 8.43 12.43
82.20 0.0 0.0
   
Vapor-liquid Equilibrium
for Isopropanol/Acetone[2]
P = 101.325 kPa
BP
Temp.
°C		  % by mole acetone
liquid vapor
77.92 6.12 19.90
76.71 8.28 25.52
71.50 19.59 47.03
70.99 20.91 48.90
69.20 26.01 55.29
68.85 27.10 56.50
65.91 37.55 66.12
63.55 48.12 73.37
63.42 48.74 73.75
62.46 53.77 76.63
62.37 54.27 76.91
61.85 57.22 78.49
61.86 57.12 78.43


Spectral data

UV-Vis
λmax  ? nm
Extinction coefficient, ε  ?
IR
Major absorption bands  ? cm−1
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments		  

References

  1. ^ Lange's Handbook of Chemistry, 10th ed. pp 1669-1674
  2. ^ a b c "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved on 5 May 2007.

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

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Wikipedia content modification information:

  • This page was last modified on 14 July 2007, at 12:39.

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