Description

Benzoic Acid, 4,4'-Methylenebis-, Diethyl Ester is a high-purity diester derivative of methylenebisbenzoic acid, valued for its role as a versatile chemical intermediate and functional additive. Its molecular structure provides excellent thermal stability and compatibility, making it a critical component in advanced material synthesis. This product is essential for manufacturers in the polymer, specialty chemical, and performance additive industries seeking reliable intermediates for high-value applications.

Application

• Polymer Additive: Acts as a plasticizer, stabilizer, or co-monomer in the production of specialty resins and engineering plastics.
• Chemical Intermediate: Serves as a key building block for synthesizing complex organic molecules, including pharmaceuticals and agrochemicals.
• UV Stabilizer Precursor: Used in the manufacture of light-absorbing compounds for coatings and polymer stabilization.
• Lubricant & Grease Formulation: Imparts desirable properties such as thermal resistance and low volatility in high-performance lubricants.
• Adhesive & Sealant Systems: Functions as a modifier to enhance flexibility, adhesion, and durability in formulated products.
• Crosslinking Agent: Employed in thermoset polymer systems to control cure rates and final material properties.

Basic Information

Product Name	Benzoic Acid, 4,4'-Methylenebis-, Diethyl Ester
CAS No.	18190-51-7
Molecular Formula	C19H20O4
Molecular Weight	312.36 g/mol
Synonyms	4,4'-Methylenebis(benzoic acid) diethyl ester; Diethyl 4,4'-methylenedibenzoate; Ethyl 4,4'-methylenedibenzoate; Bis(4-ethoxycarbonylphenyl)methane; 4,4'-Methylenedibenzoic Acid Diethyl Ester; 1,1'-(Methylenedi-4,1-phenylene)bis[1-oxo-1-ethoxy]; Ethyl 4-[[(4-ethoxycarbonylphenyl)methyl]amino]benzoate (related isomer)
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 4,4'-Methylenebis-, Diethyl Ester is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) documenting purity, identity, and key parameters is provided with every shipment to guarantee consistency and traceability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
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.