Terephthalic acid (data page)

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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[edit]

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[edit]

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[edit]

Phase behavior
Triple point  ? K (? °C), ? Pa
Critical point  ? K (? °C), ? Pa
Std enthalpy change
of fusion
, ΔfusHo
 ? kJ/mol
Std entropy change
of fusion
, ΔfusSo
 ? J/(mol·K)
Std enthalpy change
of vaporization
, ΔvapHo
 ? kJ/mol
Std entropy change
of vaporization
, ΔvapSo
 ? J/(mol·K)
Solid properties
Std enthalpy change
of formation
, ΔfHosolid
232 kJ/mol [1]
Standard molar entropy,
Sosolid
 ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
Liquid properties
Std enthalpy change
of formation
, ΔfHoliquid
 ? kJ/mol
Standard molar entropy,
Soliquid
 ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
Gas properties
Std enthalpy change
of formation
, ΔfHogas
 ? kJ/mol
Standard molar entropy,
Sogas
 ? J/(mol K)
Heat capacity, cp  ? J/(mol K)

Spectral data[edit]

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
 

Notes and references[edit]

  • ^ Lange's Handbook of Chemistry, 15th ed. McGraw Hill 1999, Section 4.1.