Terephthalic Acid

CAS Number 100-21-0
Molecular Formula C8H6O4
Molecular Weight 166.133 g/mol
InChI Key KKEYFWRCBNTPAC-UHFFFAOYSA-N
LogP 2.00
Synonyms
  • Terephthalic acid
  • Benzene-1,4-dicarboxylic acid
  • 1,4-Benzenedicarboxylic acid
  • 100-21-0
  • TPA
  • 1,4-Benzenedicarboxylic acid
  • 4-09-00-03301
  • 1,4-BENZENEDICARBOXYLIC ACID, PARA-PHTHALIC ACID
  • 1,4-Dicarboxybenzene
  • 4-Carboxybenzoic acid
  • Acide terephtalique
  • acido tereftalico
  • Amoco TA 33
  • NSC 36973
  • para-Phthalic acid
  • p-Benzenedicarboxylic acid
  • p-Carboxybenzoic acid
  • p-Dicarboxybenzene
  • p-Phthalic acid
  • PURIFIED TEREPHTHALIC ACID
  • TEREPHTHALSAEURE
  • Terephthalsaure
  • BRN 1909333
  • EINECS 202-830-0
  • Tephthol
  • Kyselina tereftalova
  • UNII-6S7NKZ40BQ
  • Benzene-p-dicarboxylate
  • Benzene-p-dicarboxylic acid
  • Kyselina terftalova
  • P-Phthelate
  • P-Phthelic acid
  • p-Benzenedicarboxylate
  • p-Phthalate
  • p-Phthalic acid
  • para-benzenedicarboxylic acid
  • 211863-90-0
  • 211863-92-2

Applications:


Separation of Phthalic Acids and Related Impurities
 

Phthalic acid, phthalic acid isomers, and related products present in the production of phthalic acid were separated on the Primesep D column, based on reversed-phase and in-exchange mechanisms. Neutral, hydrophobic compounds of the phthalic acid production are retained by a reversed-phase mechanism, and phthalic acid and other acidic compounds are retained by a combination of reversed-phase and anion-exchange mechanisms. Resolution and selectivity of this separation can be modified by varying the amount of acetonitrile, buffer concentrations, and buffer pH. This method can be used for monitoring the production cycle of phthalic acid and related impurities.

 

Condition

Column Primesep D, 4.6x150 mm, 5 µm, 100A
Mobile Phase Gradient MeCN - 10-50%, 15 min
Buffer H2SO4 - 0.1%
Flow Rate 1.0 ml/min
Detection UV, 210 nm
 

Description

Class of Compounds Acid, Hydrophilic, Ionizable
Analyzing Compounds Terephthalaldehyde, Phthalic acid, 4-Carboxybenzaldehyde, Benzoic acid, Terephthalic acid, p –Tolualdehyde, p-Toluic acid
 

Application Analytes:

4-Carboxybenzaldehyde
Benzoic Acid
Phthalic Acid
Terephthalaldehyde
Terephthalic Acid
p-Tolualdehyde
p-Toluic Acid