Description

3-(o-Isocyanatobenzyl)-o-Tolyl Isocyanate is a specialized aromatic diisocyanate monomer featuring two reactive isocyanate groups on distinct aromatic rings. This compound matters for its role as a critical building block in the synthesis of high-performance polyurethane and polyurea polymers, offering tailored cross-linking density and structural rigidity. Industrial R&D chemists and formulators in the coatings, adhesives, sealants, and elastomers (CASE) sectors need this material to develop advanced materials with enhanced thermal stability, chemical resistance, and mechanical properties.

Application

• Primary monomer for synthesizing specialized polyurethane resins and prepolymers.
• Cross-linking agent in high-performance industrial coatings and adhesives requiring durability.
• Key raw material for producing polyurea elastomers with superior abrasion resistance.
• Intermediate in the synthesis of blocked isocyanates for heat-curable systems.
• Research and development of novel thermoset polymers and composites.
• Modifier for epoxy resins to introduce urethane linkages and improve flexibility.

Basic Information

Product Name	3-(o-Isocyanatobenzyl)-o-Tolyl Isocyanate
CAS No.	94166-36-6
Molecular Formula	C16H12N2O2
Molecular Weight	264.28 g/mol
Synonyms	1,1'-Methylenebis(2-isocyanatobenzene); Bis(2-isocyanatophenyl)methane; 2,2'-Methylenediphenyl Diisocyanate (2,2'-MDI); o,o'-Methylenediphenyl Diisocyanate; 2-Isocyanato-1-((2-isocyanatophenyl)methyl)benzene; 3-(2-Isocyanatobenzyl)-2-methylphenyl Isocyanate; Desmodur® RC (related trade series); BICM
EINECS	Contact for details

Quality Control

Every batch of our 3-(o-Isocyanatobenzyl)-o-Tolyl Isocyanate is manufactured and tested under a strict quality management system to ensure high purity and batch-to-batch consistency. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request, detailing key parameters such as assay, isocyanate content, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent reaction with atmospheric moisture. Isolate from strong bases, acids, alcohols, amines, and other compounds containing active hydrogen.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 98.0 %
Purity (HPLC)	≥ 97.0 %
Hydrolyzable Chloride	≤ 0.1 %
Specific Gravity (20°C)	1.20 - 1.25

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