Description

1,3-Bis(2-Isocyanato-2-Propyl)Benzene is a high-purity aromatic diisocyanate monomer, also known by its CAS number 2778-42-9. This compound serves as a critical building block in the synthesis of advanced polyurethane and polyurea polymers, offering enhanced thermal stability and chemical resistance. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for specialized resin and composite production.

Application

• High-Performance Polyurethane Coatings: Used as a crosslinker to formulate coatings with superior durability, chemical resistance, and weatherability for industrial, automotive, and marine applications.
• Specialty Adhesives and Sealants: A key component in the production of high-strength, flexible adhesives and sealants for construction, aerospace, and automotive assembly.
• Elastomer Manufacturing: Essential for creating cast, thermoplastic, and millable polyurethane elastomers used in wheels, rollers, gaskets, and impact-absorbing components.
• Polyurea Spray Linings and Coatings: Reacts with polyamines to form fast-curing, abrasion-resistant polyurea linings for tanks, pipes, and truck bed liners.
• Composite Materials: Acts as a resin matrix modifier in fiber-reinforced composites, enhancing interlaminar shear strength and thermal properties.
• Blocked Isocyanate Formulations: Used to produce thermally latent crosslinkers for one-component (1K) powder coatings and prepreg systems.

Basic Information

Product Name	1,3-Bis(2-Isocyanato-2-Propyl)Benzene
CAS No.	2778-42-9
Molecular Formula	C14H16N2O2
Molecular Weight	244.29 g/mol
Synonyms	1,3-Bis(2-isocyanatopropan-2-yl)benzene; m-Tetramethylxylylene Diisocyanate (m-TMXDI); meta-TMXDI; 1,3-Bis(α,α-dimethylisocyanatomethyl)benzene; Benzene, 1,3-bis(2-isocyanato-2-propyl)-; 1,3-Bis(isocyanato-1,1-dimethylethyl)benzene; m-Xylylene diisocyanate, tetramethyl-; TMXDI (meta isomer)
EINECS	220-474-5

Quality Control

Our 1,3-Bis(2-Isocyanato-2-Propyl)Benzene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profiling by gas chromatography (GC), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. Our quality commitment aligns with global standards for industrial chemical production.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F - 77°F). Due to its hygroscopic (moisture-sensitive) and highly volatile nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening 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 (Titration)	≥ 99.0 %
Isomer Content (GC)	≥ 98.0 % (meta-isomer)
Hydrolyzable Chloride	≤ 50 ppm
Total Chlorine	≤ 100 ppm
Color (APHA)	≤ 50
Specific Gravity (20°C)	1.05 - 1.07
Viscosity (25°C)	Contact for details

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