Description

N,N"-(Methylenedi-4,1-Phenylene)Bis[N'-Phenyl-Urea] is a high-purity diaryl urea derivative, also known by its CAS number 13140-83-5. This compound serves as a critical chemical intermediate and functional additive, valued for its specific molecular architecture and reactivity. It is primarily sought by manufacturers in the polymer, specialty chemical, and advanced material sectors for applications requiring precise molecular building blocks.

Application

• Polymer Industry: As a chain extender, cross-linking agent, or monomer in the synthesis of high-performance polyurethanes, polyureas, and epoxy resins.
• Chemical Synthesis: A key intermediate in the production of more complex organic molecules, including dyes, pigments, and pharmaceutical active ingredients.
• Material Science: Used in the development of advanced composites and coatings to enhance thermal stability, mechanical strength, and chemical resistance.
• Adhesives & Sealants: Functions as a curing agent or modifier to improve the final properties of industrial adhesives and sealant formulations.
• Research & Development: Serves as a standard or reagent in analytical chemistry and material science research for method development and quality control.

Basic Information

Product Name	N,N"-(Methylenedi-4,1-Phenylene)Bis[N'-Phenyl-Urea]
CAS No.	13140-83-5
Molecular Formula	C27H24N4O2
Molecular Weight	436.51 g/mol
Synonyms	4,4'-Methylenebis(N-phenylurea); 1,1'-(Methylenedi-4,1-phenylene)bis(3-phenylurea); Bis(4-phenylcarbamoylphenyl)methane; MDI-based urea derivative; N,N'-Diphenyl-4,4'-methylenediureylene; Methylene diphenyl diurea; 4,4'-Methylenebis(phenylurea); Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our N,N"-(Methylenedi-4,1-Phenylene)Bis[N'-Phenyl-Urea] is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

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

Specification

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