Glycerol (data page)

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This page provides supplementary chemical data on glycerol.

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 1.4729 at 20°C
Abbe number ?
Dielectric constant, εr 42.5 ε0 at 25 °C
Bond strength  ?
Bond length  ?
Bond angle  ?
Magnetic susceptibility  ?
Surface tension 63 dyn/cm at 20°C
59 dyn/cm at 90°C
52 dyn/cm at 150°C
Viscosity[1] 4220 mPa·s at 2.8°C
1069 mPa·s at 20°C

Thermodynamic properties

Phase behavior
Triple point 291.8 K (18.7 °C), ? Pa
Critical point 850 K (577 °C), 7500 kPa
Std enthalpy change
of fusion, ΔfusHo		 18.28 kJ/mol
Std entropy change
of fusion, ΔfusSo		 62.7 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 91.7 kJ/mol
Std entropy change
of vaporization, ΔvapSo		 201 J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		  ? kJ/mol
Standard molar entropy,
Sosolid		  ? J/(mol K)
Heat capacity, cp 150. J/(mol K) 6°C - 11°C
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 –669.6 kJ/mol
Standard molar entropy,
Soliquid		  ? J/(mol K)
Enthalpy of combustion, ΔcHo –1654.3 kJ/mol
Heat capacity, cp 221.9 J/(mol K) at 25°C
Gas properties
Std enthalpy change
of formation, ΔfHogas		 –577.9 kJ/mol
Standard molar entropy,
Sogas		  ? J/(mol K)
Heat capacity, cp  ? J/(mol K)

Vapor pressure of liquid

P in mm Hg 1 10 40 100 400 760
T in °C 125.5 167.2 198.0 220.1 263.0 290.0

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

log10 of Glycerol vapor pressure. Uses formula: obtained from CHERIC
log10 of Glycerol vapor pressure. Uses formula: \scriptstyle \log_e P_{mmHg} = \scriptstyle \log_e (\frac {760} {101.325}) - 21.25867 \log_e(T+273.15) - \frac {16726.26} {T+273.15} + 165.5099 + 1.100480 \times 10^{-05} (T+273.15)^2 obtained from CHERIC[2]


Freezing point of aqueous solutions

 % glycerol
by volume		 10 20 30 40 50 60 70 80 90 100
Freezing point
°C		 –1.6 –4.8 –9.5 –15.5 –22.0 –33.6 –37.8 –19.2 –1.6 17.0
Specific gravity
d15°		 1.02415 1.40935 1.07560 1.10255 1.12985 1.15770 1.18540 1.21290 1.23950 1.26557

Table data obtained from Lange's Handbook of Chemistry, 10th ed. Specific gravity is at 15°C, referenced to water at 15°C.

See details on: Freezing Points of Glycerine-Water Solutions Dow Chemical [3]

Distillation data

Vapor-liquid Equilibrium of Glycerol/water[4]
P = 760 mmHg
BP
Temp.
°C		  % by mole water
liquid vapor
278.8 2.75 93.15
247.0 4.67 94.73
224.0 6.90 95.63
219.2 7.67 97.43
210.0 9.01 97.83
202.5 10.31 97.24
196.5 11.59 98.39
175.2 17.56 98.99
149.3 30.04 99.64
137.2 38.47 99.76
136.8 38.95 98.78
131.8 43.58 99.76
121.5 56.33 99.84
112.8 70.68 99.93
111.3 73.86 99.94
106.3 84.42 99.96

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. ^ "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved on 13 May 2007.
  3. ^ Freezing Points of Glycerine-Water Solutions Dow Chemical
  4. ^ "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center.

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 31 October 2007, at 17:00.

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