Description

2 4'-Methylenebis(Phenyl Isocyanate) is a high-purity aromatic diisocyanate monomer, a critical building block in advanced polymer synthesis. Its chemical structure provides excellent reactivity and cross-linking capabilities, making it indispensable for creating materials with superior mechanical and thermal properties. This compound is essential for manufacturers in the polyurethane, coatings, and specialty adhesives industries seeking to enhance product performance and durability.

Application

• Polyurethane Elastomers: A key raw material for producing high-performance elastomers with excellent abrasion resistance and load-bearing capacity.
• Coatings and Paints: Used in formulating high-quality, durable polyurethane coatings for industrial, automotive, and marine applications.
• Adhesives and Sealants: Serves as a cross-linking agent in specialty adhesives, providing strong bonds and chemical resistance.
• Rigid and Flexible Foams: A component in the production of insulating foams and cushioning materials.
• Composite Materials: Used as a matrix resin or modifier in fiber-reinforced plastics and other composite systems.
• Chemical Intermediate: Employed in organic synthesis for pharmaceuticals, agrochemicals, and other fine chemicals.

Basic Information

Product Name	2 4'-Methylenebis(Phenyl Isocyanate)
CAS No.	5873-54-1
Molecular Formula	C₁₅H₁₀N₂O₂
Molecular Weight	250.25 g/mol
Synonyms	4,4'-Methylenebis(phenyl isocyanate); MDI (specific isomer); Methylene diphenyl diisocyanate (isomeric mixture); Bis(4-isocyanatophenyl)methane; 4,4'-Diphenylmethane diisocyanate; p,p'-MDI; Methylene bis(4-phenyl isocyanate); Isonate 125M
EINECS	227-534-9

Quality Control

Our 2 4'-Methylenebis(Phenyl Isocyanate) is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by titration and impurity profile analysis via HPLC, to ensure it meets exacting purity and consistency standards. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and quality assurance for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent reaction with atmospheric moisture. Isolate from strong bases, amines, alcohols, and water.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0 %
Hydrolyzable Chlorine	≤ 0.01 %
Acidity (as HCl)	≤ 0.01 %
Isomer Content (HPLC)	Specified on COA

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