Description

3-Hydroxyphthalic Acid is a versatile aromatic dicarboxylic acid derivative, distinguished by the presence of a hydroxyl group on the phthalic acid backbone. This unique structure makes it a valuable intermediate for synthesizing more complex molecules, particularly in the production of dyes, pigments, and specialty polymers. It is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop advanced materials with specific functional properties.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of anthraquinone and other complex dye molecules, contributing to color fastness and vibrancy.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and diagnostic agents, leveraging its reactive carboxyl and hydroxyl groups.
• Polymer Modification: Used to introduce hydroxyl functionality into polyester resins and other polymers, enhancing properties like adhesion, cross-linking potential, and solubility.
• Agrochemical Formulations: Employed in the research and development of herbicides and plant growth regulators.
• Chelating Agent Precursor: Its structure allows for the creation of ligands useful in metal ion sequestration and catalysis.
• Research & Development: A valuable reagent in organic synthesis for academic and industrial research exploring new chemical entities.

Basic Information

Product Name	3-Hydroxyphthalic Acid
CAS No.	601-97-8
Molecular Formula	C8H6O5
Molecular Weight	182.13 g/mol
Synonyms	3-Hydroxybenzene-1,2-dicarboxylic acid; 1,2-Benzenedicarboxylic acid, 3-hydroxy-; 3-Carboxy-2-hydroxybenzoic acid; 2-Hydroxyisophthalic acid; 3-Hydroxy-o-phthalic acid; β-Hydroxyphthalic acid; 3-HPA
EINECS	210-011-6

Quality Control

Our 3-Hydroxyphthalic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing the results is provided with each shipment to guarantee traceability and compliance with your project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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