Description

Bis-(4-Cyanatophenyl)-Sulfide is a high-purity aromatic cyanate ester monomer, a critical building block for advanced thermoset polymers. This compound matters for its role in creating high-performance materials with exceptional thermal stability, low dielectric loss, and excellent mechanical properties. It is primarily needed by manufacturers in the aerospace, electronics, and advanced composites industries for producing high-temperature adhesives, structural composites, and electronic encapsulants.

Application

• As a key monomer for the synthesis of high-temperature polycyanurate resins.
• Production of advanced composite matrices for aerospace and defense applications.
• Formulation of high-performance adhesives and sealants requiring thermal and chemical resistance.
• Manufacture of printed circuit board (PCB) laminates and electronic encapsulants with low dielectric constant.
• Used in research and development of novel thermosetting polymers and network structures.
• As a cross-linking agent or modifier in specialty epoxy resin systems to enhance performance.

Basic Information

Product Name	Bis-(4-Cyanatophenyl)-Sulfide
CAS No.	101657-79-8
Molecular Formula	C14H8N2O2S
Molecular Weight	268.29 g/mol
Synonyms	4,4'-Thiobis(phenyl cyanate); Bis(4-cyanatophenyl) Sulfide; 1-Cyano-4-[(4-cyanatophenyl)sulfanyl]benzene; Thiobis(4-phenylene) cyanate; Dicyanate ester of 4,4'-Thiodiphenol; 4,4'-Thiodiphenyl dicyanate; Cyanate ester monomer; Aromatic cyanate ester
EINECS	Contact for details

Quality Control

Our Bis-(4-Cyanatophenyl)-Sulfide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Specifications are designed to meet the demanding requirements of advanced polymer applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Moisture (KF)	≤ 0.5%

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