Description

3,4-Difluoro-trans-Styryl Isocyanate is a specialized fluorinated aromatic isocyanate monomer, a key building block for advanced material synthesis. Its value lies in the unique reactivity of the isocyanate group combined with the electronic effects of the difluoro-substituted styrene backbone, enabling the creation of high-performance polymers with tailored properties. This compound is essential for R&D and production in industries focused on advanced coatings, specialty adhesives, and high-value agrochemical and pharmaceutical intermediates.

Application

• Polymer & Material Science: A critical monomer for synthesizing polyurethanes and polyureas with enhanced chemical resistance, thermal stability, and weatherability for high-performance coatings and elastomers.
• Agrochemical Intermediates: Serves as a key precursor in the development of novel fluorinated pesticides and herbicides, where the fluorine atoms improve biological activity and environmental persistence.
• Pharmaceutical Synthesis: Used in medicinal chemistry to introduce the urea pharmacophore via reaction with amines, facilitating the development of new drug candidates, particularly in targeted therapies.
• Specialty Adhesives & Sealants: Imparts superior adhesion and durability to advanced adhesive formulations used in demanding automotive, aerospace, and electronic applications.
• Surface Modification & Functionalization: Employed to graft isocyanate functionalities onto polymers, nanoparticles, or other surfaces to alter surface properties and enable further chemical conjugation.
• Cross-linking Agent: Acts as an efficient cross-linker for polymers containing hydroxyl or amine groups, enhancing the mechanical strength and solvent resistance of the final network.

Basic Information

Product Name	3,4-Difluoro-trans-Styryl Isocyanate
CAS No.	862094-21-1
Molecular Formula	C9H5F2NO
Molecular Weight	181.14 g/mol
Synonyms	trans-3,4-Difluorostyryl isocyanate; (E)-3,4-Difluorostyryl isocyanate; 1-Isocyanato-2-(3,4-difluorophenyl)ethene; 3,4-Difluorocinnamyl isocyanate; 2-(3,4-Difluorophenyl)vinyl isocyanate; (E)-2-(3,4-Difluorophenyl)ethenyl isocyanate; 3,4-DFSI
EINECS	Contact for details

Quality Control

Our 3,4-Difluoro-trans-Styryl Isocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, identity, and impurity profiles to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at 2-8°C under an inert atmosphere (e.g., nitrogen or argon) to minimize moisture absorption and polymerization. Due to its highly volatile nature and reactivity, keep away from heat, sparks, open flames, and strong bases. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Isomer Content (trans)	≥ 98.0%
Water Content (KF)	≤ 0.1%

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