Description

4-Chlorobenzoic Anhydride, also known as p-Chlorobenzoic Anhydride, is a key chemical intermediate characterized by its reactive anhydride functional group. This compound is essential for introducing the 4-chlorobenzoyl moiety into target molecules, enabling the synthesis of more complex structures. It is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for research, development, and production processes.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a chlorobenzoyl group.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where its structural motif imparts specific biological activity.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers, such as polyimides or polyesters, to modify thermal and mechanical properties.
• Organic Synthesis Reagent: Employed in academic and industrial laboratories for acylation reactions, facilitating the creation of esters, amides, and other derivatives.
• Dye and Pigment Manufacturing: Utilized as a precursor in the synthesis of complex organic dyes and pigments.
• Liquid Crystal & Electronic Materials: Finds application in the development of advanced materials for electronic displays and optoelectronic devices.

Basic Information

Product Name	4-Chlorobenzoic Anhydride
CAS No.	389577-12-2
Molecular Formula	C14H8Cl2O3
Molecular Weight	295.12 g/mol
Synonyms	p-Chlorobenzoic Anhydride; 4-Chlorobenzoic Acid Anhydride; Bis(4-chlorobenzoyl) Anhydride; 4,4'-Dichlorodibenzoyl Ether; Anhydride of 4-Chlorobenzoic Acid; 4-Chlorobenzoyl Anhydride; p-Chlorobenzoic Acid Anhydride
EINECS	Contact for details

Quality Control

Our 4-Chlorobenzoic Anhydride is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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