Description

3,5-Dichloro-1,2-Benzenedicarboxylic Acid is a high-purity, functionalized aromatic dicarboxylic acid derivative, serving as a critical building block in advanced organic synthesis. Its value lies in the precise positioning of chlorine substituents, which enables selective reactivity and the construction of complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries who require a reliable, high-quality intermediate for developing active ingredients and performance materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a halogenated aromatic core.
• Agrochemical Synthesis: Used in the development of herbicides, fungicides, and insecticides where the dichloro-substituted benzene ring provides specific biological activity.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for producing high-performance polymers, liquid crystals, and specialty resins.
• Organic Synthesis Building Block: Utilized in coupling reactions (e.g., Suzuki, Heck) and as a starting material for creating complex heterocycles and ligands for catalysis.
• Dyestuff & Pigment Intermediate: Employed in the manufacture of specialized dyes and pigments where chlorination enhances color fastness and properties.

Basic Information

Product Name	3,5-Dichloro-1,2-Benzenedicarboxylic Acid
CAS No.	25641-98-9
Molecular Formula	C8H4Cl2O4
Molecular Weight	235.02 g/mol
Synonyms	3,5-Dichlorophthalic Acid; 1,2-Benzenedicarboxylic acid, 3,5-dichloro-; 3,5-Dichlorobenzene-1,2-dicarboxylic Acid; NSC 403107; 3,5-Dichloro-o-phthalic Acid; Dichlorophthalic Acid (mixed isomer reference); AI3-52207; CCRIS 9358
EINECS	Contact for details

Quality Control

Our 3,5-Dichloro-1,2-Benzenedicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistency.

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). Keep away from strong bases, oxidizing agents, and sources of heat.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
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.