Description

Tolylene 2,5-Diisocyanate is a specialized aromatic diisocyanate monomer, a key building block in polymer chemistry. Its primary value lies in its ability to form high-performance polyurethane and polyurea materials through its reactive isocyanate groups. This compound is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to develop products with specific mechanical and chemical resistance properties.

Application

• Polyurethane Elastomers: Used as a curing agent to produce elastomers with excellent abrasion resistance, flexibility, and durability for industrial parts and wheels.
• High-Performance Coatings: A critical component in formulating two-component polyurethane coatings for automotive, industrial, and marine applications requiring chemical and weather resistance.
• Specialty Adhesives & Sealants: Serves as a crosslinker to create strong, flexible polyurethane-based adhesives and sealants with superior bonding strength.
• Polyurea Spray Coatings: Reacts with amine-terminated resins to form fast-curing, tough polyurea coatings for waterproofing and protective linings.
• Polymer Modification: Employed to introduce urethane linkages into other polymer backbones, enhancing properties like toughness and adhesion.
• Chemical Intermediate: Used in organic synthesis to create a variety of derivatives, including blocked isocyanates for heat-activated systems.

Basic Information

Product Name	Tolylene 2,5-Diisocyanate
CAS No.	614-90-4
Molecular Formula	C9H6N2O2
Molecular Weight	174.16 g/mol
Synonyms	2,5-Tolylene Diisocyanate; 2,5-TDI; 2-Methyl-1,3-phenylene Diisocyanate; 2,5-Diisocyanatotoluene; Toluene-2,5-diisocyanate; 1,3-Diisocyanato-2-methylbenzene; 2,5-Bis(isocyanato)toluene; m-Tolylene Diisocyanate (mixed isomer reference)
EINECS	210-403-1

Quality Control

Our Tolylene 2,5-Diisocyanate is manufactured under strict quality management protocols. Every batch undergoes rigorous analytical testing, including assay, isomer content, and impurity profiling, to ensure it meets precise specifications for reactivity and performance. Certificates of Analysis (COA) documenting purity, physical properties, and safety data are provided with each shipment to guarantee traceability and compliance for your production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for isocyanate storage (typically below 25°C). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent reaction with atmospheric moisture and CO2, which can lead to polymerization and pressure buildup.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
2,5-Isomer Content	≥ 97.0%
Hydrolyzable Chlorine	≤ 0.01%
Acidity (as HCl)	≤ 0.01%
Specific Gravity (20°C)	1.21 - 1.23
Viscosity (25°C)	Contact for details

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