Description

Benzoyl Chloride, 4,4'-Methylenebis- is a specialized bifunctional aromatic acid chloride derivative, serving as a critical high-purity building block in advanced organic synthesis. Its primary value lies in its dual reactive sites, enabling the efficient formation of amide and ester linkages to create complex polymers and fine chemicals. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and high-performance polymer industries seeking to develop novel materials and active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring bis-amide or bis-ester functionalities.
• Polymer Chemistry: Monomer for the production of specialty polyamides, polyesters, and epoxy hardeners, contributing to high thermal and mechanical stability.
• Agrochemical Synthesis: Used in creating herbicides, fungicides, and plant growth regulators that benefit from its aromatic backbone.
• Cross-linking Agent: Functions as a cross-linker in resin and coating formulations to enhance durability and chemical resistance.
• Liquid Crystal & OLED Materials: Intermediate in the production of advanced electronic and display materials requiring precise molecular architecture.
• Dye & Pigment Manufacturing: Building block for synthesizing complex organic dyes and pigments.
• Chemical Research (R&D): Versatile reagent for exploring new synthetic pathways and novel compound libraries in academic and industrial laboratories.

Basic Information

Product Name	Benzoyl Chloride, 4,4'-Methylenebis-
CAS No.	3268-26-6
Molecular Formula	C15H10Cl2O2
Molecular Weight	293.14 g/mol
Synonyms	4,4'-Methylenebis(benzoyl chloride); Bis(4-benzoyl chloride)methane; 4,4'-Methylenedibenzoyl chloride; [4-(Chlorocarbonyl)phenyl]methyl-4-chlorobenzoate; α,α'-Dichloro-4,4'-methylenedibenzoic acid (dichloride); NSC 403107; p,p'-Methylenedibenzoyl chloride
EINECS	221-889-6

Quality Control

Our Benzoyl Chloride, 4,4'-Methylenebis- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and FT-IR for structural confirmation, to ensure it meets exacting standards for sensitive synthetic applications. Certificates of Analysis (COA) with full traceability are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and strong acid/organic solvent nature, keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Keep away from heat, open flames, and incompatible materials such as bases, alcohols, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Contact for details

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