This page provides supplementary chemical data on Terephthalic acid, the organic compound and one of three isomeric phthalic acids, all with formula C6H4(CO2H)2.
Material Safety Data Sheet
The handling of this chemical may require notable safety precautions, which are set forth on the Material Safety Datasheet (MSDS) for it.SIRI
Structure and properties
Structure and properties Index of refraction, nD ? Abbe number ? Dielectric constant, εr ? ε0 at ? °C Bond strength ? Bond length ? Bond angle ? Magnetic susceptibility ?
Thermodynamic properties
Phase behavior Triple point ? K (? °C), ? Pa Critical point ? K (? °C), ? Pa Std enthalpy changeof fusion, ΔfusHo ? kJ/mol Std entropy changeof fusion, ΔfusSo ? J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo ? kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid 232 kJ/mol Lange's Handbook of Chemistry, 15th ed. McGraw Hill 1999, Section 4.1. Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid ? J/(mol K) Heat capacity, cp ? J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas ? kJ/mol Standard molar entropy,Sogas ? J/(mol K) Heat capacity, cp ? J/(mol K)
Spectral data
UV-Vis λmax 240 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