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Record Information
Version2.0
Created at2006-05-22 14:17:53 UTC
Updated at2025-02-11 15:48:59 UTC
NP-MRD IDNP0000290
Natural Product DOIhttps://doi.org/10.57994/2995
Secondary Accession NumbersNone
Natural Product Identification
Common NameTerephthalic acid
DescriptionTerephthalic acid is a benzenedicarboxylic acid carrying carboxy groups at positions 1 and 4. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and isophthalic acids. It is a conjugate acid of a terephthalate(1-). Terephthalic acid is one isomer of the three phthalic acids. It finds important use as a commodity chemical, principally as a starting compound for the manufacture of polyester (specifically PET), used in clothing and to make plastic bottles. It is also known as 1,4-benzenedicarboxylic acid, and it has the chemical formula C6H4(COOH)2.
Structure
Thumb
Synonyms
Chemical FormulaC8H6O4
Average Mass166.1308 Da
Monoisotopic Mass166.02661 Da
IUPAC Namebenzene-1,4-dicarboxylic acid
Traditional Nameterephthalic acid
CAS Registry Number100-21-0
SMILES
OC(=O)C1=CC=C(C=C1)C(O)=O
InChI Identifier
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 KeyKKEYFWRCBNTPAC-UHFFFAOYSA-N
Experimental Spectra
Predicted Spectra
Chemical Shift Submissions
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 600.133705802, CD3OD, simulated)bgnzk@missouri.eduSumner Lab, MU Metabolomics Center, University of Missouri, Columbia. MO, USADr. Bharat Goel2024-06-27View Spectrum
Species
Species of Origin
Chemical Taxonomy
Description Belongs to the class of organic compounds known as p-phthalic acid and derivatives. P-phthalic acid and derivatives are compounds containing a benzene ring bearing a carboxylic acid group at ring carbon atoms 1 and 4.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentP-phthalic acid and derivatives
Alternative Parents
Substituents
  • Para_phthalic_acid
  • Benzoic acid
  • Benzoyl
  • Dicarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point> 300 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.015 mg/mL at 20 °CNot Available
LogP2.00Hansch CH, Leo A and Hoekman DH. "Exploring QSAR: Hydrophobic, Electronic, and Steric Constraints. Volume 1" ACS Publications (1995).
Predicted Properties
PropertyValueSource
Water Solubility2.29 g/LALOGPS
logP1.01ALOGPS
logP1.29ChemAxon
logS-1.9ALOGPS
pKa (Strongest Acidic)3.32ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area74.6 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity40.57 m³·mol⁻¹ChemAxon
Polarizability15.2 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0002428
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB023000
KNApSAcK IDNot Available
Chemspider ID7208
KEGG Compound IDC06337
BioCyc IDTEREPHTHALATE
BiGG IDNot Available
Wikipedia LinkTerephthalic_acid
METLIN ID6676
PubChem Compound7489
PDB IDNot Available
ChEBI ID15702
Good Scents IDrw1285651
References
General References