Description

3,4-Dihydroxyphthalic Acid is a multifunctional aromatic dicarboxylic acid derivative characterized by two phenolic hydroxyl groups, making it a valuable intermediate in advanced organic synthesis. Its unique structure provides sites for complexation and further chemical modification, which is critical for developing high-performance materials and active pharmaceutical ingredients. This compound is essential for research and production in the pharmaceutical, agrochemical, and specialty polymer industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex drug molecules, particularly those requiring specific chelating or antioxidant properties.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators that benefit from its phenolic functionality.
• Polymer & Resin Modifier: Serves as a monomer or cross-linking agent in the manufacture of specialty polyesters, epoxy resins, and high-temperature polymers to enhance thermal stability and adhesion.
• Dye & Pigment Precursor: An important intermediate in the synthesis of complex organic dyes, pigments, and colorants for industrial applications.
• Chelating Agent: Functions as a ligand for metal ions in catalytic systems, water treatment formulations, and analytical chemistry applications.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new organic reactions and material science.

Basic Information

Product Name	3,4-Dihydroxyphthalic Acid
CAS No.	82784-82-5
Molecular Formula	C8H6O6
Molecular Weight	198.13 g/mol
Synonyms	3,4-Dihydroxybenzene-1,2-dicarboxylic Acid; 4,5-Dihydroxyphthalic Acid; Phthalic Acid, 3,4-Dihydroxy-; 1,2-Benzenedicarboxylic Acid, 3,4-Dihydroxy-; 3,4-DHPA
EINECS	Contact for details

Quality Control

Our 3,4-Dihydroxyphthalic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with key parameters including assay, impurity profile, and physical specifications. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation and to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.