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 1.1813 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 changeof fusionΔfusHo 6.636 kJ/mol Std entropy changeof fusionΔfusSo 37.25 J/(mol·K) Std enthalpy changeof vaporizationΔvapHo 38.06 kJ/mol Std entropy changeof vaporizationΔvapSo 87.30 J/(mol·K) Solid properties Std enthalpy changeof formation ΔfHosolid ? kJ/mol Standard molar entropySosolid ? 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 changeof formation ΔfHoliquid +12.0 kJ/mol Standard molar entropySoliquid 220.96 J/(mol K) Heat capacity cp 155.96 J/(mol K) Gas properties Std enthalpy changeof formation ΔfHogas +50.00 kJ/mol Standard molar entropySogas ? J/(mol K) Heat capacity cp 103.7 J/(mol K) van der Waals' constantsLange's Handbook of Chemistry 10th ed (1967), pp 1522–1524 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 ?
References
External links NIST website Physical and Chemical Properties of Toluene in chemeo.com