Description

4,5-Dichloro-1,2-Benzenediamine is a halogenated aromatic diamine compound of significant industrial interest. This versatile chemical building block is valued for its role as a key precursor in the synthesis of complex heterocyclic systems and functional polymers. It is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors. The compound's reactivity makes it essential for creating dyes, pigments, and specialized polymers with tailored properties.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with benzimidazole or related heterocyclic cores.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its dichloro-substituted aromatic structure imparts specific biological activity.
• Dye and Pigment Manufacturing: Acts as a key monomer for producing high-performance azo dyes, pigments, and colorants with enhanced lightfastness and thermal stability.
• Polymer and Resin Production: Employed as a curing agent or chain extender in the manufacture of epoxy resins, polyurethanes, and high-temperature polyimides, improving mechanical and chemical resistance.
• Corrosion Inhibitor Formulation: Incorporated into specialty coatings and additives to provide protective properties for metals in harsh environments.
• Research & Development: Utilized in academic and industrial R&D for exploring new organic synthesis pathways and developing novel chemical entities.

Basic Information

Product Name	4,5-Dichloro-1,2-Benzenediamine
CAS No.	5348-42-5
Molecular Formula	C6H6Cl2N2
Molecular Weight	177.03 g/mol
Synonyms	4,5-Dichloro-o-phenylenediamine; 1,2-Diamino-4,5-dichlorobenzene; 4,5-Dichloro-1,2-diaminobenzene; o-Phenylenediamine, 4,5-dichloro-; 4,5-Dichlorobenzene-1,2-diamine; NSC 403079; 4,5-Dichloro-1,2-benzenediol (common misnomer, verify context); 4,5-Dichloro-OPD
EINECS	226-302-7

Quality Control

Our 4,5-Dichloro-1,2-Benzenediamine is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request. We adhere to cGMP principles where applicable to support our clients in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents, acids, and moisture.

Specification

Item	Specification
Appearance	Light yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158°C - 165°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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