What can purified terephthalic acid be used for?

Pure terephthalic acid is a bulk organic raw material that can be used in many industries, such as coatings, paints, medicines, plastics, etc. So, what can purified terephthalic acid be used for?

As an important chemical raw material, purified terephthalic acid is also known as 1,4-benzenedicarboxylic acid and terephthalic acid. Its molecular formula is C8H6O4 and its molecular weight is 166.13g/mol. It appears as a white crystalline powder and is soluble in organic solvents such as alcohol, ether, and ester. Its relative density is 1.51 and its melting point is 139°C.

Pure terephthalic acid contains two carboxyl groups in the molecule, so it is acidic. It can react with excess sodium hydroxide to determine the acid value of purified terephthalic acid. In addition, purified terephthalic acid can also undergo esterification with some hydroxyl compounds to generate corresponding esters.