Toluene (data page)

This page provides supplementary chemical data on toluene.

MSDS sheets

Structure and properties

Structure and properties
Index of refraction, nD	1.4969 at 20 °C
Abbe number	?
Dielectric constant, εr	2.379 ε0 at 25 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Surface tension	28.52 dyn/cm at 25 °C
Viscosity[1]	1.1813 mPa·s at −25 °C 1.0787 mPa·s at −20 °C 0.9888 mPa·s at −15 °C 0.9095 mPa·s at −10 °C 0.8393 mPa·s at −5 °C 0.7770 mPa·s at 0 °C 0.7214 mPa·s at 5 °C 0.6717 mPa·s at 10 °C 0.6270 mPa·s at 15 °C 0.5867 mPa·s at 20 °C 0.5503 mPa·s at 25 °C 0.5173 mPa·s at 30 °C 0.4873 mPa·s at 35 °C 0.4599 mPa·s at 40 °C 0.4349 mPa·s at 45 °C 0.4120 mPa·s at 50 °C

Thermodynamic properties

Phase behavior
Triple point	178.15 K (−94.99 °C), ? Pa
Critical point	591.79 K (318.64 °C), 4.109 MPa
Std enthalpy change of fusionΔfusHo	6.636 kJ/mol
Std entropy change of fusionΔfusSo	37.25 J/(mol·K)
Std enthalpy change of vaporizationΔvapHo	38.06 kJ/mol
Std entropy change of vaporizationΔvapSo	87.30 J/(mol·K)
Solid properties
Std enthalpy change of formation ΔfHosolid	? kJ/mol
Standard molar entropy Sosolid	? J/(mol K)
Heat capacity cp liquid	181,2 J/(mol K)
Heat capacity cp gas	103,6 J/(mol K)
Liquid properties
Std enthalpy change of formation ΔfHoliquid	+12.0 kJ/mol
Standard molar entropy Soliquid	220.96 J/(mol K)
Heat capacity cp	155.96 J/(mol K)
Gas properties
Std enthalpy change of formation ΔfHogas	+50.00 kJ/mol
Standard molar entropy Sogas	? J/(mol K)
Heat capacity cp	103.7 J/(mol K)
van der Waals' constants[2]	a = 2438 L2 kPa/mol2 b = 0.1463 liter per mole

Vapor pressure of liquid

P in mm Hg		1	10	40	100	400	760	1520	3800	7600	15200	30400	45600
T in °C		−25	6.4	35	42

Spectral data

UV-Vis
Spectrum	NIST
Lambda-max	253, 259, 261, 268nm
Log Ε	2.36, 2.42, 2.43, 2.27
IR
Spectrum	NIST
Major absorption bands	3028, 1605, 1496, 729, 696 cm−1
NMR
Proton NMR	(CDCl3, 300 MHz) δ 7.17–7.11 (m, 2H), 7.08–7.01 (m, 3H), 2.32 (s, 3H)
Carbon-13 NMR	(CDCl3, 100 MHz) δ 137.7, 128.7, 127.9, 125.0, 20.8
Other NMR data	?
MS
Masses of main fragments	?

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.