Description

1,3-Phenylen-Bis-Cyanat is a high-purity aromatic cyanate ester monomer, a critical building block for advanced thermoset polymers. This compound is valued for its role in creating high-performance materials with exceptional thermal stability, low dielectric loss, and superior mechanical properties. It is essential for manufacturers in the aerospace, electronics, and advanced composites industries seeking to develop next-generation structural components and insulating materials.

Application

• High-Performance Thermoset Resins: Primary monomer for the synthesis of polycyanurate and bismaleimide-triazine (BT) resins.
• Aerospace Composites: Matrix resin precursor for carbon fiber and glass fiber reinforced composites used in radomes, wing structures, and interior components.
• Electronic Encapsulation & Circuit Boards: Key ingredient in high-frequency, low-loss printed circuit board (PCB) laminates, semiconductor encapsulants, and underfill materials.
• Adhesives & Coatings: Formulation of high-temperature resistant structural adhesives and protective coatings for demanding environments.
• Advanced Composite Molding: Used in resin transfer molding (RTM) and prepreg systems for automotive and industrial applications.
• Flame-Retardant Materials: Contributes to the inherent flame retardancy and low smoke generation of cured cyanate ester systems.

Basic Information

Product Name	1,3-Phenylen-Bis-Cyanat
CAS No.	1129-88-0
Molecular Formula	C8H4N2O2
Molecular Weight	160.13 g/mol
Synonyms	1,3-Phenylene Dicyanate; m-Phenylene Dicyanate; Cyanato Benzene; 1,3-Dicyanatobenzene; m-Phenylenedicyanate; Bis(3-cyanophenyl) Ether (related); RC-1 (trade name reference); AroCy M-1 (trade name reference)
EINECS	214-447-9

Quality Control

Our 1,3-Phenylen-Bis-Cyanat is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed to meet precise specifications, including assay, melting point, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with relevant industry standards and can supply materials tailored to specific customer 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). The product is moisture-sensitive (hygroscopic) and should be kept under dry conditions. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.5%
Melting Point	79 - 83 °C
Moisture (KF)	≤ 0.5%
Free Phenol (HPLC)	≤ 0.2%

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