Description

5-Hydroxyisophthalic Acid is a versatile aromatic dicarboxylic acid derivative, distinguished by the presence of a hydroxyl group on the benzene ring. This unique bifunctional structure makes it a valuable intermediate for synthesizing high-performance polymers, specialty chemicals, and active pharmaceutical ingredients (APIs). It is essential for manufacturers in the polymer, pharmaceutical, and fine chemical industries seeking to develop advanced materials with tailored properties.

Application

• Polymer Synthesis: A key monomer for producing high-temperature resistant polyesters, polyamides, and liquid crystal polymers (LCPs).
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Metal-Organic Frameworks (MOFs): Serves as an organic linker for constructing porous MOF materials used in gas storage, separation, and catalysis.
• Dye and Pigment Manufacturing: Acts as a precursor for creating specialized dyes and organic pigments.
• Chelating Agents: Utilized in the production of ligands for metal ion complexation in various industrial processes.
• Cross-linking Agent: Employed in epoxy resins and other thermosetting polymers to enhance thermal and mechanical properties.
• Fine Chemical Synthesis: A building block for synthesizing complex organic compounds in research and development.

Basic Information

Product Name	5-Hydroxyisophthalic Acid
CAS No.	618-83-7
Molecular Formula	C8H6O5
Molecular Weight	182.13 g/mol
Synonyms	5-Hydroxybenzene-1,3-dicarboxylic Acid; 1,3-Benzenedicarboxylic acid, 5-hydroxy-; Isophthalic acid, 5-hydroxy-; 5-Carboxy-2-hydroxybenzoic acid; 2-Hydroxyisophthalic Acid; 5-Hydroxy-m-phthalic acid; 5-Hydroxy-1,3-benzenedicarboxylic acid
EINECS	210-574-9

Quality Control

Our 5-Hydroxyisophthalic Acid is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC, IR, and titration methods, to ensure it meets high-purity standards suitable for demanding applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

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); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
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.