Description

Diphenylmethylenediisocyanate is a key aromatic diisocyanate monomer used in the synthesis of high-performance polymers. This compound is critical for creating materials with enhanced durability, chemical resistance, and structural integrity. It is primarily sought after by manufacturers in the polyurethane, coatings, and specialty adhesives industries for formulating advanced elastomers, sealants, and protective coatings.

Application

• Polyurethane Elastomer Production: Serves as a fundamental building block for high-resilience and abrasion-resistant elastomers used in industrial wheels, rollers, and gaskets.
• Specialty Coatings & Paints: A key raw material in formulating high-performance, two-component polyurethane coatings that offer excellent weatherability and chemical resistance for automotive, marine, and industrial applications.
• Adhesive & Sealant Formulation: Used in the production of high-strength structural adhesives and flexible sealants for construction, automotive assembly, and aerospace bonding.
• Polymer Modification: Employed as a cross-linking agent to enhance the thermal and mechanical properties of various polymers, including certain polyols and resins.
• R&D and Chemical Synthesis: Utilized in laboratory settings for the research and development of novel polyurethane materials, foams, and other isocyanate-derived compounds.

Basic Information

Product Name	Diphenylmethylenediisocyanate
CAS No.	10031-75-1
Molecular Formula	C15H10N2O2
Molecular Weight	250.25 g/mol
Synonyms	MDI (Diphenylmethane Diisocyanate) Isomer; 4,4'-Diphenylmethane Diisocyanate (related isomer); Methylene Diphenyl Diisocyanate variant; Bis(4-isocyanatophenyl)methane (related); Desmodur 44; Isonate 125M; Nacconate 300; Hylene M50
EINECS	Contact for details

Quality Control

Our Diphenylmethylenediisocyanate is produced and tested under stringent quality management protocols to ensure batch-to-batch consistency and reliability. We adhere to relevant industry standards for isocyanate monomers. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee it meets your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive) and highly volatile. Containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and polymerization. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Hydrolyzable Chloride	≤ 0.01 %
Total Chlorine	≤ 0.05 %
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	~1.22

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