Description

p-Chlorobenzoic Anhydride is a high-purity organic chemical intermediate essential for advanced synthesis. This compound is valued for its role in constructing complex molecular architectures, particularly in the pharmaceutical and agrochemical sectors. It is a critical building block for researchers and manufacturers developing active pharmaceutical ingredients (APIs), fine chemicals, and specialty polymers who require reliable, high-quality intermediates.

Application

• Key intermediate in the synthesis of pharmaceutical active ingredients (APIs), especially those containing chlorinated aromatic systems.
• Building block for advanced agrochemicals, including herbicides and fungicides.
• Monomer or cross-linking agent in the production of specialty polymers and high-performance resins.
• Intermediate for liquid crystal materials and other advanced organic electronic compounds.
• Starting material for organic synthesis research in academic and industrial R&D laboratories.
• Precursor for dyes, pigments, and photographic chemicals.

Basic Information

Product Name	p-Chlorobenzoic Anhydride
CAS No.	790-41-0
Molecular Formula	C14H8Cl2O3
Molecular Weight	295.12 g/mol
Synonyms	4-Chlorobenzoic Anhydride; 4-Chlorobenzoic Acid Anhydride; Bis(4-chlorobenzoyl) Anhydride; p-Chlorobenzoic Acid Anhydride; 1,1'-(Oxydicarbonyl)bis(4-chlorobenzene); 790-41-0; Anhydrid kyseliny p-chlorbenzoove [Czech]
EINECS	212-327-4

Quality Control

Our p-Chlorobenzoic Anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

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%

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