Description

4-Chlorobenzenediazonium is a versatile and highly reactive diazonium salt, a key intermediate in organic synthesis. Its primary value lies in its ability to introduce the 4-chlorophenyl group into target molecules via diazonium coupling reactions, enabling the synthesis of azo dyes, pigments, and complex aromatic compounds. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require precise functionalization of aromatic systems.

Application

• Azo Dye & Pigment Synthesis: A crucial coupling agent for producing chlorinated azo dyes and organic pigments with specific color fastness and stability properties.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex molecules where the 4-chlorobenzene moiety is required.
• Agrochemical Manufacturing: Serves as a building block for herbicides, fungicides, and insecticides that contain chlorinated aromatic structures.
• Functional Material Production: Employed in the creation of liquid crystals, polymers, and other advanced materials requiring specific aromatic functionalization.
• Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating novel chemical entities.
• Surface Modification: Can be used in surface chemistry for grafting aromatic layers onto various substrates via diazonium chemistry.

Basic Information

Item	Detail
Product Name	4-Chlorobenzenediazonium
CAS No.	17333-85-6
Molecular Formula	C6H4ClN2+
Molecular Weight	139.56 g/mol (cation)
Synonyms	p-Chlorobenzenediazonium; 4-Chlorobenzenediazonium ion; Diazonium, (p-chlorophenyl)-; (4-Chlorophenyl)diazonium; p-Chlorophenyldiazonium; 1-Chloro-4-diazoniobenzene; 4-Chlorophenyldiazonium; 4-Chlorobenzene diazonium salt
EINECS	Contact for details

Quality Control

Our 4-Chlorobenzenediazonium is produced and handled under stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity, consistent reactivity, and batch-to-batch reliability. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles. Our quality systems are designed to meet the exacting standards of GMP and ISO guidelines where applicable, supporting our commitment to supply chain integrity for critical synthesis applications.

Storage

Preserve in a tightly closed container, protected from light. Due to its light-sensitive and easily oxidized nature, this material must be stored under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, open flames, and incompatible materials such as strong reducing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow solid (typically as salt)
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95%
Purity (NMR)	Conforms
Water Content (KF)	≤ 2.0%
Residual Solvents (GC)	Meets ICH guidelines

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