Isopropyl alcohol (data page)
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 MSDS Search Engine, 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, ΔfusH |
5.28 kJ/mol |
Std entropy change of fusion, ΔfusS |
28.6 J/(mol·K) |
Std enthalpy change of vaporization, ΔvapH |
44.0 kJ/mol |
Std entropy change of vaporization, ΔvapS |
124 J/(mol·K) |
Solid properties | |
Std enthalpy change of formation, ΔfH |
? kJ/mol |
Standard molar entropy, S |
? J/(mol K) |
Heat capacity, cp | 0.212 J/(mol K) at –200°C |
Liquid properties | |
Std enthalpy change of formation, ΔfH |
–318.2 kJ/mol |
Standard molar entropy, S |
180 J/(mol K) |
Heat capacity, cp | 2.68 J/(gK) at 20°C-25°C |
Gas properties | |
Std enthalpy change of formation, ΔfH |
–261.1 kJ/mol |
Standard molar entropy, S |
333 J/(mol K) |
Heat capacity, cp | 1.54 J/(gK) 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.
Distillation data
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See also
Spectral data
UV-Vis | |
---|---|
λmax | 205 nm |
Extinction coefficient, ε | 100.2 m2/mol |
IR | |
Major absorption bands | ? 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
- ↑ Lange's Handbook of Chemistry, 10th ed. pp 1669-1674
- ↑ Parks, J. S.; B. Barton (1928). "Vapor pressure data for isopropyl alcohol and tertiary butyl alcohol". Journal of the American Chemical Society. 50: 24–26. doi:10.1021/ja01388a004.
- ↑ Barr-David, F; B. F. Dodge (1959). "Vapor-Liquid Equilibrium at High Pressures. The Systems Ethanol-Water and 2-Propanol-Water". Journal of Chemical and Engineering Data. 4: 107–121. doi:10.1021/je60002a003.
- 1 2 3 "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved 2007-05-05.
Except where noted otherwise, data relate to standard ambient temperature and pressure.
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