This page provides supplementary chemical data on isopropanol.

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 eChemPortal, and follow its directions.

Structure and properties

Structure and properties 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 ViscosityLange's Handbook of Chemistry, 10th ed. pp 1669–1674 4.5646 mPa·s at 0 °C2.3703 mPa·s at 20 °C1.3311 mPa·s at 40 °C

Thermodynamic properties

Phase behavior Triple point 184.9 K (−88.2 °C), ? Pa Std entropy changeof fusion, ΔfusSo 28.6 J/(mol·K) Std entropy changeof vaporization, ΔvapSo 124 J/(mol·K) Solid properties Std enthalpy changeof 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 changeof formation, ΔfHoliquid −318.2 kJ/mol Standard molar entropy,Soliquid 180 J/(mol K) Heat capacity, cp 2.68 J/(gK) at 20 °C-25 °C Gas properties Std enthalpy changeof formation, ΔfHogas −261.1 kJ/mol Standard molar entropy,Sogas 333 J/(mol K) Heat capacity, cp 1.54 J/(gK) at 25 °C

Vapor pressure of Iso-propyl Alcohol 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.

Distillation data

Vapor-liquid equilibriumfor isopropanol/waterP = 760 mm Hg BPtemp.°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 equilibriumfor isopropanol/methanolP = 101.325 kPa BPtemp.°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 equilibriumfor isopropanol/acetoneP = 101.325 kPa BPtemp.°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

See also Tetrachloroethylene (data page)

Spectral data

UV-Vis λmax 205 nm Extinction coefficient, ε 100.2 m2/mol IR Major absorption bands 3334, 2970, 1466, 1378, 1160, 1128, 951, 817, 639 cm−1 NMR Proton NMR   Carbon-13 NMR   Other NMR data   MS Masses of main fragments m/z (% of relative intensity): 45 (100), 43 (19.1), 27 (16.8), 29 (12.5), 19 (9.9), 15 (9.5), 41 (8.2), 31 (6.8), 39 (6.6), 42 (4.4)

References