Description

4-[(3-Isocyanato-4-Methylphenyl)Methyl]-m-Phenylene Diisocyanate is a specialized aromatic diisocyanate monomer, a key building block in the synthesis of high-performance polyurethane materials. Its unique asymmetrical structure provides enhanced reactivity and cross-linking density, enabling the formulation of polymers with superior mechanical strength, chemical resistance, and thermal stability. This compound is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to develop advanced polyurethane systems for demanding applications.

Application

• High-Performance Polyurethane Coatings: Used as a cross-linking agent in industrial, automotive, and marine coatings for exceptional durability, gloss, and chemical resistance.
• Specialty Adhesives and Sealants: A critical component in formulating structural adhesives and high-strength sealants for aerospace, construction, and automotive assembly.
• Elastomer Production: Serves as a key monomer for manufacturing cast, millable, and thermoplastic polyurethane elastomers used in gaskets, wheels, and industrial parts.
• Polyurethane Foams: Employed in the synthesis of rigid and semi-rigid foams requiring specific thermal insulation or structural properties.
• Polymer Modification: Used to modify other polymers, such as epoxies or polyesters, to introduce urethane linkages and enhance flexibility and toughness.
• Chemical Intermediate: Acts as a precursor for further chemical synthesis, including the production of blocked isocyanates, prepolymers, and other specialty chemicals.

Basic Information

Product Name	4-[(3-Isocyanato-4-Methylphenyl)Methyl]-m-Phenylene Diisocyanate
CAS No.	94213-40-8
Molecular Formula	C17H12N2O4
Molecular Weight	308.29 g/mol
Synonyms	1,3-Bis(3-isocyanato-4-methylbenzyl)benzene; m-Xylylene Diisocyanate derivative; Asymmetric m-TMXDI; 4,4'-Methylenebis(2-methylphenyl isocyanate) isomer; 1,3-Bis[(3-isocyanato-4-methylphenyl)methyl]benzene; Bisphenol A diisocyanate analog; TMXDI-based diisocyanate; 1,3-Bis(3-isocyanato-4-methylbenzyl)benzene
EINECS	Contact for details

Quality Control

Our production of 4-[(3-Isocyanato-4-Methylphenyl)Methyl]-m-Phenylene Diisocyanate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques including HPLC, GC, and titration to confirm identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Due to its hygroscopic and moisture-sensitive nature, containers must be kept under a dry inert atmosphere (nitrogen or argon) after opening to prevent hydrolysis and polymerization. Keep away from heat, open flames, and sources of ignition. Isolate from amines, alcohols, water, and other compounds containing active hydrogen.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Isocyanate Content (NCO)	26.5 - 27.5 %
Hydrolyzable Chloride	≤ 50 ppm
Total Chlorine	≤ 100 ppm
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details

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