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4-Hydroxyphthalic acid is used as a precursor to prepare 3,5-dichloro-4-hydroxyphthalic acid using the reagent aqueous acetic acid and chlorine. Further, it is also used as a starting material in the manufacture of N-(4-carboxyphenyl)-4-acetoxyphthalimide.
Li, X. L.; Liu, G. Z.; Xin, L. Y.; Li, G. L.; Ma, L. F.; Li, J. W. Two novel coordination polymers based on multicarboxylate derivatives and flexible dipyridyl ligand: Synthesis, structures and photoluminescent properties. Indian J. Chem. 2015, 54 (9), 1098-1103.
Zhou, Y.; Chen, G.; Wang, W.; Wei, L.; Zhang, Q.; Song, L.; Fang, X. Synthesis and characterization of transparent polyimides derived from ester-containing dianhydrides with different electron affinities. RSC Adv. 2015, 5 (96), 79207-79215.
Hazard Statements: H315-H319
Causes skin irritation. Causes serious eye irritation.
Precautionary Statements: P280a-P264-P305+P351+P338-P321-P332+P313-P337+P313
Wear protective gloves and eye/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Specific treatment (see label). If skin irritation occurs: Get medical advice/attention. If eye irritation persists: