Description

Vinylphosphonic Dichloride is a highly reactive organophosphorus compound that serves as a critical building block in advanced chemical synthesis. Its value lies in its bifunctional vinyl and acid chloride groups, enabling the creation of novel polymers and functional materials with tailored properties. This intermediate is essential for R&D and production in industries such as specialty polymers, flame retardants, and surface modification technologies.

Application

• Phosphorus-Containing Polymer Synthesis: A key monomer for producing flame-retardant polyesters, polyamides, and polyurethanes.
• Surface Modifying Agent: Used to graft phosphonate groups onto metal oxides, glass, or polymers to enhance adhesion, corrosion resistance, or biocompatibility.
• Pharmaceutical & Agrochemical Intermediates: Serves as a precursor in the synthesis of bioactive molecules, including prodrugs and plant growth regulators.
• Ligand and Chelating Agent Precursor: Employed to manufacture specialized ligands for metal catalysis or extraction processes.
• Crosslinking Agent: Imparts thermal and chemical stability to polymer networks through reactive vinyl and P-Cl bonds.
• Electrolyte Additive for Lithium-Ion Batteries: Investigated for forming stable solid-electrolyte interphase (SEI) layers to improve battery performance and safety.

Basic Information

Product Name	Vinylphosphonic Dichloride
CAS No.	1438-74-0
Molecular Formula	C2H3Cl2OP
Molecular Weight	148.92 g/mol
Synonyms	Ethenephosphonyl Dichloride; Vinylphosphonoyl Dichloride; Dichloro(vinyl)phosphine Oxide; Phosphonic Dichloride, Vinyl-; VPDC; Vinylphosphonic Acid Dichloride; (Dichlorophosphinyl)ethene
EINECS	215-865-6

Quality Control

Our Vinylphosphonic Dichloride is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including GC, NMR, and titration methods, to ensure high purity and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to minimize hydrolysis and volatility. Due to its hygroscopic and strong acid/organic solvent nature, keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) and away from moisture, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.48 g/cm³
Boiling Point	~58-60°C (at 10 mmHg)

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