Glycerol (data page)

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This page provides supplementary chemical data on glycerol.

Material Safety Data Sheet[edit]

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.

Structure and properties[edit]

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 63.4 mN/m at 20°C
58.6 mN/m at 90°C
51.9 mN/m at 150°C
Viscosity[1] 4.220 Pa·s at 2.8°C
1.069 Pa·s at 20°C

Thermodynamic properties[edit]

Phase behavior
Triple point 291.8 K (18.7 °C), ~99500 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[edit]

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.

LogGlycerolVaporPressure.png

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[edit]

 % glycerol
by volume [probably a typo for "by weight" - see Lange's cited below.]
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 1.04935 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[edit]

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[edit]

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[edit]

  1. ^ Lange's Handbook of Chemistry, 10th ed. pp 1669-1674
  2. ^ "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved 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. Retrieved 7 June 2007. 

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

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