Description

1,3-Phenylene Diisocyanate is a key aromatic diisocyanate monomer used in the synthesis of high-performance polymers. This compound matters for its role as a building block in creating polyurethanes and polyisocyanurates with enhanced thermal stability and chemical resistance. Industries requiring durable coatings, adhesives, sealants, and elastomers rely on this chemical for its superior cross-linking properties.

Application

• Polyurethane Synthesis: A core monomer for producing rigid and semi-rigid polyurethane foams, coatings, and adhesives.
• High-Performance Elastomers: Used in the manufacture of specialty elastomers requiring excellent mechanical properties and chemical resistance.
• Industrial Coatings & Sealants: A critical component in formulating durable, protective coatings for automotive, construction, and marine applications.
• Polyisocyanurate (PIR) Foams: Imparts superior fire resistance and thermal insulation properties to rigid foams used in construction.
• Adhesive & Binder Systems: Employed in high-strength binding systems for composites, wood products, and specialty textiles.
• Chemical Intermediate: Serves as a precursor for various chemical modifications and the synthesis of other specialty isocyanates.

Basic Information

Product Name	1,3-Phenylene Diisocyanate
CAS No.	123-61-5
Molecular Formula	C8H4N2O2
Molecular Weight	160.13 g/mol
Synonyms	m-Phenylene Diisocyanate; 1,3-Diisocyanatobenzene; m-Phenylene Diisocyanate; Isocyanic Acid, m-Phenylene Ester; Benzene-1,3-diyl diisocyanate; m-PDI; m-Xylylene Diisocyanate (Note: common misnomer, but often searched); Meta-Phenylene Diisocyanate
EINECS	204-646-6

Quality Control

Our 1,3-Phenylene Diisocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profiling, to ensure it meets precise specifications for purity and reactivity. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee supply reliability and batch-to-batch consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area under an inert atmosphere (e.g., nitrogen) to prevent oxidation and moisture absorption. Due to its high volatility, keep containers tightly sealed and away from heat, sparks, and open flame. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0 %
Hydrolyzable Chlorine	≤ 0.01 %
Specific Gravity (20°C)	1.20 - 1.25
Viscosity (25°C)	Contact for details

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