Description

1,4-Benzenedicarboxaldehyde, 2,3,5,6-Tetrachloro- is a highly functionalized aromatic dialdehyde derivative, serving as a critical synthetic intermediate. Its value lies in the precise positioning of its reactive aldehyde groups and chlorine substituents, enabling the construction of complex, symmetrical molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require a high-purity, versatile building block for specialized synthesis.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules, particularly those requiring symmetrical, halogenated frameworks for enhanced bioactivity or stability.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the tetrachloro-substituted aromatic core contributes to product efficacy and environmental persistence.
• Ligand and Chelator Preparation: Serves as a starting material for synthesizing sophisticated polydentate ligands used in catalysis and metal ion sequestration.
• Polymer and Dendrimer Chemistry: Acts as a core monomer or branching unit for creating novel polymers, cross-linked networks, and dendrimers with specific thermal or chemical resistance properties.
• Organic Electronic Materials: Investigated as a precursor for organic semiconductors and conductive polymers due to its rigid, planar, and electron-deficient structure.
• Cross-linking Agent: Utilized in specialty resin formulations and coatings where its dual aldehyde functionality can create strong covalent bonds.

Basic Information

Product Name	1,4-Benzenedicarboxaldehyde, 2,3,5,6-Tetrachloro-
CAS No.	3421-67-8
Molecular Formula	C8H2Cl4O2
Molecular Weight	271.91 g/mol
Synonyms	2,3,5,6-Tetrachloroterephthalaldehyde; Tetrachloroterephthalaldehyde; Terephthalaldehyde, 2,3,5,6-tetrachloro-; 2,3,5,6-Tetrachloro-1,4-benzenedicarboxaldehyde; 2,3,5,6-Tetrachlorobenzene-1,4-dicarbaldehyde; 1,4-Bis(formyl)-2,3,5,6-tetrachlorobenzene
EINECS	Contact for details

Quality Control

Our 1,4-Benzenedicarboxaldehyde, 2,3,5,6-Tetrachloro- is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (HPLC), impurity profile, and physical characteristics is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed and away from direct light to maintain stability and purity.

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	≤ 1.0%
Heavy Metals	≤ 20 ppm

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