Description

Diphenyl (Methylenedi-4,1-Phenylene)-Dicarbamate is a high-purity organic chemical compound primarily recognized as a key intermediate in the synthesis of advanced materials. Its value lies in its role as a precursor for high-performance polymers, including polyurethanes and polycarbonates, where it contributes to enhanced thermal stability and mechanical properties. This product is essential for manufacturers and R&D facilities in the polymer, specialty chemical, and pharmaceutical industries seeking reliable raw materials for advanced formulations.

Application

• Polymer Intermediate: A critical building block for the synthesis of specialized polyurethanes and polycarbonate copolymers.
• Cross-linking Agent: Used in formulations to create thermally stable and chemically resistant polymer networks.
• Pharmaceutical Synthesis: Serves as an advanced intermediate in the development of active pharmaceutical ingredients (APIs).
• Adhesive & Coating Formulations: Imparts durability and adhesion properties in high-performance industrial coatings and adhesives.
• Material Science R&D: Employed in research for developing new polymers with tailored properties.
• Specialty Chemical Production: A precursor for various carbamate-based specialty chemicals.

Basic Information

Product Name	Diphenyl (Methylenedi-4,1-Phenylene)-Dicarbamate
CAS No.	101-65-5
Molecular Formula	C₂₁H₁₈N₂O₄
Molecular Weight	362.38 g/mol
Synonyms	4,4'-Methylenediphenyl Dicarbamate; Methylene Diphenyl-4,4'-dicarbamate; Bis(4-carbamoyloxyphenyl)methane; MDI Dicarbamate; Diphenylmethane-4,4'-dicarbamate; 4,4'-Diphenylmethanedicarbamate; MOCA Dicarbamate Intermediate
EINECS	202-967-5

Quality Control

Our Diphenyl (Methylenedi-4,1-Phenylene)-Dicarbamate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and impurity profile determination by HPLC, to ensure it meets exacting standards for use in sensitive applications like polymer and pharmaceutical synthesis. A Certificate of Analysis (COA) documenting purity, identity, and other critical parameters is provided with every shipment.

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). Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	165 - 170 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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