Description

4,5-Dichloroisophthalic Acid is a high-purity aromatic dicarboxylic acid derivative, distinguished by its two strategically positioned chlorine atoms on the isophthalic acid backbone. This compound matters as a versatile and critical chemical building block for synthesizing advanced polymers, pharmaceutical intermediates, and specialty agrochemicals. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, polymer, and agrochemical industries for creating high-performance materials and active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a rigid, halogenated aromatic core.
• Polymer Chemistry: Serves as a monomer for producing high-performance polyamides, polyesters, and polyimides with enhanced thermal stability and chemical resistance.
• Ligand Synthesis: Used to create complexing agents and ligands for metal-organic frameworks (MOFs) and catalysts.
• Agrochemical Synthesis: Employed in the development of advanced herbicides and fungicides where the dichloro-substituted aromatic system is biologically active.
• Dye and Pigment Intermediate: Acts as a starting material for synthesizing specialized colorants and pigments.
• Cross-linking Agent: Utilized in epoxy resin systems and other thermosetting polymers to improve mechanical properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical entities and materials science.

Basic Information

Product Name	4,5-Dichloroisophthalic Acid
CAS No.	6660-66-8
Molecular Formula	C8H4Cl2O4
Molecular Weight	235.02 g/mol
Synonyms	4,5-Dichloro-1,3-benzenedicarboxylic Acid; Isophthalic Acid, 4,5-Dichloro-; 4,5-Dichlorobenzene-1,3-dicarboxylic Acid; 6660-66-8; NSC 403107; 1,3-Benzenedicarboxylic acid, 4,5-dichloro-
EINECS	Contact for details

Quality Control

Our 4,5-Dichloroisophthalic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets the highest standards of purity and consistency. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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