26-Naphthalenedicarboxylic acid Tags: Chemical Compound, Chemical Substance.26-Naphthalenedicarboxylic acid is used in the synthesis of polyethylene naphthalate (PEN poly(ethylene-26-naphthalene dicarboxylate)). It is also used in the synthesis of many metal-organic frameworks such as IRMOF-8. thumbnail IUPAC name 26-Naphthalenedicarboxylic acid Learn more... Loading...