Description

3-Methoxy-Phenylcyanat is a versatile aromatic cyanate ester monomer used as a key building block in advanced polymer synthesis. This compound is valued for its ability to impart high thermal stability, excellent mechanical properties, and low dielectric constants to the resulting materials. It is primarily sought after by R&D chemists and process engineers in the electronics, aerospace, and high-performance composite industries for formulating specialized resins and adhesives.

Application

• High-Performance Thermoset Polymers: A critical monomer for the production of polycyanurate and polyimide resins, which are used in circuit boards and semiconductor encapsulants.
• Advanced Composite Matrices: Serves as a matrix resin precursor for carbon fiber and fiberglass composites in aerospace and automotive structural components.
• Electronic Adhesives and Underfills: Used in formulations for die-attach adhesives and underfill materials that require high thermal endurance and low moisture absorption.
• Chemical Synthesis Intermediate: Acts as a reactive intermediate in organic synthesis for introducing the cyanate functional group into more complex molecules for pharmaceutical and agrochemical research.
• Flame-Retardant Additives: Incorporated into polymer blends to enhance flame retardancy due to the nitrogen content and the char-forming tendency of its cured network.

Basic Information

Product Name	3-Methoxy-Phenylcyanat
CAS No.	1126-64-3
Molecular Formula	C8H7NO2
Molecular Weight	149.15 g/mol
Synonyms	3-Methoxyphenyl cyanate; m-Methoxyphenyl cyanate; 3-Cyanatoanisole; 1-Cyano-3-methoxybenzene; (3-Methoxyphenyl) cyanate; Anisole, 3-cyano-; 3-Methoxybenzonitrile oxide (tautomer)
EINECS	214-417-5

Quality Control

Every batch of 3-Methoxy-Phenylcyanat is manufactured and tested under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) that detail purity, identity, and impurity profiles to ensure batch-to-batch consistency and suitability for your specific application. Our quality protocols are designed to meet the stringent requirements of advanced material and electronic chemical supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; for long-term storage, consider maintaining under an inert atmosphere such as nitrogen or argon to preserve purity and prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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