Description

2,4-Dichlorostyrene CAS NO 2123-27-5 is a halogenated styrene derivative characterized by its reactive vinyl group and two chlorine substituents on the aromatic ring. This compound serves as a versatile and high-value monomer and chemical intermediate, enabling the synthesis of specialized polymers and fine chemicals. It is primarily sought by R&D laboratories and industrial manufacturers in the polymer, agrochemical, and pharmaceutical sectors for creating materials with tailored properties such as enhanced chemical resistance, refractive index, or biological activity.

Application

• Polymer & Resin Modification: Key monomer for synthesizing specialty polymers, including high-refractive-index optical resins and flame-retardant materials.
• Agrochemical Intermediates: Serves as a crucial building block in the synthesis of advanced herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as an intermediate in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Crosslinking Agent: Employed in the production of crosslinked polymers and coatings to improve thermal stability and mechanical strength.
• Adhesive & Sealant Formulations: Incorporated to enhance the adhesion and chemical resistance properties of advanced adhesive systems.
• Organic Synthesis & R&D: A valuable reagent in academic and industrial laboratories for constructing complex organic molecules via reactions like Heck coupling or polymerization.

Basic Information

Product Name	2,4-Dichlorostyrene
CAS No.	2123-27-5
Molecular Formula	C8H6Cl2
Molecular Weight	173.04 g/mol
Synonyms	1,3-Dichloro-4-ethenylbenzene; 2,4-Dichloro-1-vinylbenzene; 2,4-Dichlorophenylethylene; (2,4-Dichlorophenyl)ethylene; Vinyl-2,4-dichlorobenzene; NSC 9245; 2,4-DCS
EINECS	218-333-7

Quality Control

Our 2,4-Dichlorostyrene is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR), to ensure high purity and consistent composition. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support custom synthesis and can tailor purity grades to meet specific R&D or industrial application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 2°C and 8°C (refrigerated) or as specified for the specific grade. Keep away from strong acids, bases, oxidizers, and sources of ignition. For long-term storage, consider under an inert atmosphere to prevent polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Density (at 20°C)	~1.28 g/cm³
Refractive Index (n20D)	~1.57

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