Description

2,2'-Methylenediphenyl Diisocyanate is a specialized aromatic diisocyanate monomer, a key building block in polymer chemistry. This compound matters for its role in synthesizing high-performance polyurethanes and polyureas with tailored properties. Industries requiring advanced elastomers, coatings, adhesives, and sealants need this precise chemical to achieve specific thermal, mechanical, and chemical resistance characteristics in their final products.

Application

• Primary monomer for the synthesis of specialized polyurethane elastomers and prepolymers.
• Production of high-performance coatings and paints with enhanced durability and chemical resistance.
• Formulation of advanced adhesives and sealants for industrial and automotive applications.
• Key ingredient in the manufacture of castable polyurethane parts for machinery and equipment.
• Used in R&D for developing novel polymer materials with specific chain structures and properties.
• Cross-linking agent for specialty resins in the composites and plastics industry.

Basic Information

Product Name	2,2'-Methylenediphenyl Diisocyanate
CAS No.	2536-05-2
Molecular Formula	C15H10N2O2
Molecular Weight	250.25 g/mol
Synonyms	2,2'-MDI; 2,2'-Diphenylmethane Diisocyanate; 2,2'-Methylenebis(phenyl isocyanate); Bis(2-isocyanatophenyl)methane; 2,2'-Methylenedi(phenyl isocyanate); 2,2'-Methylenebis(phenyl isocyanate); MDI-50 (component); Isonate® 2,2'-MDI (trade name variant)
EINECS	219-799-4

Quality Control

Our 2,2'-Methylenediphenyl Diisocyanate is produced and handled under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise purity and composition specifications. A comprehensive Certificate of Analysis (COA) detailing assay, isocyanate content, and impurity profiles is available for every shipment to guarantee traceability and compliance with your technical requirements.

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). This product is hygroscopic (moisture-sensitive). Containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent contact with atmospheric moisture, which can lead to polymerization or gas generation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 99.0 %
Purity (HPLC)	≥ 98.5 %
Hydrolyzable Chlorine	≤ 50 ppm
Acidity (as HCl)	≤ 0.01 %
Specific Gravity (20°C)	1.20 - 1.22
Viscosity (25°C)	Contact for details

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