Chemical Properties of Terephthalic acid (CAS 100-21-0)

Terephthalic acid

InChI
InChI=1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12)
InChI Key
KKEYFWRCBNTPAC-UHFFFAOYSA-N
Formula
C8H6O4
SMILES
O=C(O)c1ccc(C(=O)O)cc1
Molecular Weight1
166.13
CAS
100-21-0
Other Names
  • 1,4-Dicarboxybenzene
  • 1,4-benzenedicarboxylic acid
  • 1,4-benzenedioic acid
  • Acide terephtalique
  • Benzene, 1,4-dicarboxylic acid
  • Benzene, p-dicarboxylic acid
  • Kyselina tereftalova
  • NSC 36973
  • TA 12
  • TPA
  • Ta-33mp
  • WR 16262
  • p-Benzenedicarboxylic acid
  • p-Carboxybenzoic acid
  • p-Dicarboxybenzene
  • p-Phthalic acid
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Physical Properties

Property Value Unit Source
ω 1.1603 ChemSep v8.3 pure component data Compiled value
ΔcH°solid [-3227.96; -3189.30] kJ/mol Show Hide
ΔcH°solid -3189.30 ± 1.50 kJ/mol NIST
ΔcH°solid -3189.50 ± 0.42 kJ/mol NIST
ΔcH°solid -3227.96 kJ/mol NIST
ΔfG° -599.00 kJ/mol ChemSep v8.3 pure component data Compiled value
ΔfH°gas -717.90 kJ/mol ChemSep v8.3 pure component data Compiled value
ΔfH°solid [-816.30; -816.17] kJ/mol Show Hide
ΔfH°solid -816.30 ± 1.50 kJ/mol NIST
ΔfH°solid -816.17 kJ/mol NIST
ΔfusH° 30.41 kJ/mol Joback Calculated Property
ΔsubH° [98.11; 146.60] kJ/mol Show Hide
ΔsubH° 146.60 ± 0.50 kJ/mol NIST
ΔsubH° 98.11 kJ/mol NIST
ΔvapH° 119.15 kJ/mol Relay (1.0) Calculated Property
IE 9.90 ± 0.20 eV NIST
log10WS -2.07 Relay (1.0) Calculated Property
logPoct/wat 1.083 Crippen Calculated Property
McVol 114.700 ml/mol McGowan Calculated Property
Pc 4492.23 kPa ChemSep v8.3 pure component data Compiled value
Tboil 665.55 K ChemSep v8.3 pure component data Compiled value
Tc 943.06 K ChemSep v8.3 pure component data Compiled value
Tfus [573.15; 703.10] K Show Hide
Tfus 703.10 K Solid-Liquid Equilibria for Benzoic Acid + p-Toluic Acid + Chloroform, Benzoic Acid + p-Toluic Acid + Acetic Acid, and Terephthalic Acid + Isophthalic Acid + N,N-Dimethylformamide
Tfus 573.15 K ChemSep v8.3 pure component data Compiled value
UQi 4.29 ChemSep v8.3 pure component data Compiled value
URi 5.46 ChemSep v8.3 pure component data Compiled value
Vc 0.423 m3/kmol ChemSep v8.3 pure component data Compiled value
Zc 0.2426270 ChemSep v8.3 pure component data Compiled value
Zra 0.21 ChemSep v8.3 pure component data Compiled value

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,solid 199.60 J/mol×K 323.00 NIST
ΔsubH [131.00; 142.20] kJ/mol [471.00; 621.50] Show Hide
ΔsubH 142.20 ± 1.50 kJ/mol 471.00 NIST
ΔsubH 139.20 kJ/mol 578.00 NIST
ΔsubH 131.00 kJ/mol 578.00 NIST
ΔsubH 139.30 ± 3.80 kJ/mol 621.50 NIST

Correlations

Property Value Unit Temperature (K) Source
Cp,gas [115.94; 344.72] J/mol×K [273.00; 1500.00] ChemSep v8.3 pure component data Compiled value Show Hide
EquationY = A + exp(B/T + C + D·T + E·T²)
Y is Cp,gas in J/mol×K, T in K
Coefficient A8.30700e+01
Coefficient B-8.52740e+02
Coefficient C6.78124e+00
Coefficient D-6.43000e-04
Coefficient E1.41670e-07
CommentChemSep eq 16, IdealGasHeatCapacityCp
Temperature range, min.273.00
Temperature range, max.1500.00
Cp,gas 115.94 J/mol×K 273.00 Calculated Property
Cp,gas 169.43 J/mol×K 409.33 Calculated Property
Cp,gas 218.68 J/mol×K 545.67 Calculated Property
Cp,gas 256.93 J/mol×K 682.00 Calculated Property
Cp,gas 284.99 J/mol×K 818.33 Calculated Property
Cp,gas 305.20 J/mol×K 954.67 Calculated Property
Cp,gas 319.76 J/mol×K 1091.00 Calculated Property
Cp,gas 330.39 J/mol×K 1227.33 Calculated Property
Cp,gas 338.39 J/mol×K 1363.67 Calculated Property
Cp,gas 344.72 J/mol×K 1500.00 Calculated Property
Property Value Unit Temperature (K) Source
η [0.0002801; 0.0002447] Pa×s [638.12; 660.15] Joback Predicted correlation Show Hide
EquationY = exp(A + B/T + C·ln(T) + D·T^E)
Y is η in Pa×s, T in K
Coefficient A-1.22292e+01
Coefficient B2.58376e+03
Coefficient C0.00000e+00
Coefficient D0.00000e+00
Coefficient E0.00000e+00
CommentLiquid phase. Joback/Reid (1987), valid from Tf to 0.7·Tc.
Temperature range, min.638.12
Temperature range, max.660.15
η 0.0002801 Pa×s 638.12 Calculated Property
η 0.0002758 Pa×s 640.57 Calculated Property
η 0.0002716 Pa×s 643.02 Calculated Property
η 0.0002675 Pa×s 645.47 Calculated Property
η 0.0002635 Pa×s 647.91 Calculated Property
η 0.0002596 Pa×s 650.36 Calculated Property
η 0.0002558 Pa×s 652.81 Calculated Property
η 0.0002520 Pa×s 655.25 Calculated Property
η 0.0002483 Pa×s 657.70 Calculated Property
η 0.0002447 Pa×s 660.15 Calculated Property
Property Value Unit Temperature (K) Source
ΔvapH [87.93; 87.81] kJ/mol [298.15; 307.65] ChemSep v8.3 pure component data Compiled value Show Hide
EquationY = A·(1 − Tr)^(B + C·Tr + D·Tr² + E·Tr³), Tr = T/Tc
Y is ΔvapH in kJ/mol, T in K
Coefficient A8.98020e+01
Coefficient B1.89000e-01
Coefficient C-5.03050e-01
Coefficient D-1.10740e+00
Coefficient E4.31100e+00
Critical temperature, Tc (K)9.43065e+02
CommentChemSep eq 106, HeatOfVaporization
Temperature range, min.298.15
Temperature range, max.307.65
ΔvapH 87.93 kJ/mol 298.15 Calculated Property
ΔvapH 87.92 kJ/mol 299.21 Calculated Property
ΔvapH 87.90 kJ/mol 300.26 Calculated Property
ΔvapH 87.89 kJ/mol 301.32 Calculated Property
ΔvapH 87.88 kJ/mol 302.37 Calculated Property
ΔvapH 87.87 kJ/mol 303.43 Calculated Property
ΔvapH 87.85 kJ/mol 304.48 Calculated Property
ΔvapH 87.84 kJ/mol 305.54 Calculated Property
ΔvapH 87.83 kJ/mol 306.59 Calculated Property
ΔvapH 87.81 kJ/mol 307.65 Calculated Property
Property Value Unit Temperature (K) Source
Pvap [4.60; 3917.05] kPa [700.15; 1113.00] ChemSep v8.3 pure component data Compiled value Show Hide
EquationY = exp(A + B/T + C·ln(T) + D·T^E)
Y is Pvap in kPa, T in K
Coefficient A2.08950e+02
Coefficient B-2.95866e+04
Coefficient C-2.55003e+01
Coefficient D3.86337e-06
Coefficient E2.00000e+00
CommentChemSep eq 101, VaporPressure
Temperature range, min.700.15
Temperature range, max.1113.00
Pvap 4.60 kPa 700.15 Calculated Property
Pvap 15.84 kPa 746.02 Calculated Property
Pvap 45.19 kPa 791.89 Calculated Property
Pvap 110.99 kPa 837.77 Calculated Property
Pvap 241.90 kPa 883.64 Calculated Property
Pvap 478.98 kPa 929.51 Calculated Property
Pvap 878.17 kPa 975.38 Calculated Property
Pvap 1513.61 kPa 1021.26 Calculated Property
Pvap 2483.16 kPa 1067.13 Calculated Property
Pvap 3917.05 kPa 1113.00 Calculated Property
Pvap [2.36; 6322.50] kPa [567.15; 1113.00] KDB Vapor Pressure Data Show Hide
Equationln(Y) = A + B/T + C·ln(T) + D·T² + E/T²
Y is Pvap in kPa, T in K
Coefficient A4.38606e+02
Coefficient B-3.45524e+04
Coefficient C-6.04690e+01
Coefficient D2.04789e-05
Coefficient E0.00000e+00
Temperature range, min.567.15
Temperature range, max.1113.00
Pvap 2.36 kPa 567.15 Calculated Property
Pvap 8.05 kPa 627.80 Calculated Property
Pvap 19.94 kPa 688.45 Calculated Property
Pvap 41.95 kPa 749.10 Calculated Property
Pvap 83.06 kPa 809.75 Calculated Property
Pvap 166.04 kPa 870.40 Calculated Property
Pvap 351.58 kPa 931.05 Calculated Property
Pvap 815.78 kPa 991.70 Calculated Property
Pvap 2124.96 kPa 1052.35 Calculated Property
Pvap 6322.50 kPa 1113.00 Calculated Property
Property Value Unit Temperature (K) Source
ρl [1419.73; 391.78] kg/m3 [700.15; 1113.00] ChemSep v8.3 pure component data Compiled value Show Hide
EquationY = A / B^(1 + (1 − T/C)^D)
Y is ρl in kg/m3, T in K
Coefficient A7.09129e+01
Coefficient B1.81000e-01
Coefficient C1.11300e+03
Coefficient D2.85710e-01
CommentChemSep eq 105, LiquidDensity
Temperature range, min.700.15
Temperature range, max.1113.00
ρl 1419.73 kg/m3 700.15 Calculated Property
ρl 1360.51 kg/m3 746.02 Calculated Property
ρl 1298.57 kg/m3 791.89 Calculated Property
ρl 1233.22 kg/m3 837.77 Calculated Property
ρl 1163.50 kg/m3 883.64 Calculated Property
ρl 1087.85 kg/m3 929.51 Calculated Property
ρl 1003.62 kg/m3 975.38 Calculated Property
ρl 905.49 kg/m3 1021.26 Calculated Property
ρl 778.96 kg/m3 1067.13 Calculated Property
ρl 391.78 kg/m3 1113.00 Calculated Property
Property Value Unit Temperature (K) Source
λgas [0.01; 0.04] W/m×K [274.00; 1000.00] ChemSep v8.3 pure component data Compiled value Show Hide
EquationY = A·T^B / (1 + C/T + D/T²)
Y is λgas in W/m×K, T in K
Coefficient A1.61840e-04
Coefficient B8.86080e-01
Coefficient C6.24290e+02
Coefficient D9.09600e+04
CommentChemSep eq 102, VaporThermalConductivity
Temperature range, min.274.00
Temperature range, max.1000.00
λgas 0.01 W/m×K 274.00 Calculated Property
λgas 0.01 W/m×K 354.67 Calculated Property
λgas 0.01 W/m×K 435.33 Calculated Property
λgas 0.02 W/m×K 516.00 Calculated Property
λgas 0.02 W/m×K 596.67 Calculated Property
λgas 0.02 W/m×K 677.33 Calculated Property
λgas 0.03 W/m×K 758.00 Calculated Property
λgas 0.03 W/m×K 838.67 Calculated Property
λgas 0.04 W/m×K 919.33 Calculated Property
λgas 0.04 W/m×K 1000.00 Calculated Property

Similar Compounds

Benzoic acid, 4-cyano-. Benzoic acid. TEREPHTHALALDEHYDIC ACID. 4-Methoxycarbonylbenzoic acid. «alpha»,«alpha»,«alpha»-trifluoro-p-toluic acid. Benzoic acid, 4-methyl-. Terephthalic acid, disodium salt. Benzoic acid, 4-iodo-. Benzoic acid, 4-chloro-. p-Bromobenzoic acid. Benzoic acid, 4-fluoro-. 1,3-Benzenedicarboxylic acid. poly(ethylene terephthalate). 1,4-Benzenedicarboxylic acid, dimethyl ester. benzoate anion.

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Mixtures

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Sources

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