Description

2,3-Dichlorobuta-1,3-Diene is a highly reactive chlorinated diene monomer with the CAS number 1653-19-6. This compound serves as a critical building block in advanced organic synthesis, valued for its ability to introduce functional complexity into target molecules. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex heterocyclic compounds and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides requiring specific chlorinated diene motifs.
• Specialty Polymer & Resin Production: Acts as a reactive monomer or cross-linking agent for creating polymers with specific thermal or chemical resistance properties.
• Organic Synthesis & R&D: A versatile reagent in Diels-Alder reactions and other cycloadditions for constructing complex organic frameworks in laboratory and pilot-scale research.
• Chemical Intermediate for Fine Chemicals: Employed in the multi-step synthesis of dyes, pigments, and other high-value fine chemicals.

Basic Information

Product Name	2,3-Dichlorobuta-1,3-Diene
CAS No.	1653-19-6
Molecular Formula	C4H4Cl2
Molecular Weight	122.98 g/mol
Synonyms	2,3-Dichloro-1,3-butadiene; 1,3-Butadiene, 2,3-dichloro-; 2,3-Dichlorobuta-1,3-diene; NSC 60545; 2,3-Dichlorobutadiene; Dichlorobutadiene
EINECS	216-744-1

Quality Control

Our 2,3-Dichlorobuta-1,3-Diene is manufactured under strict quality management protocols. Every batch undergoes rigorous analytical testing, including GC and HPLC analysis, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated place, away from heat sources and open flames. Recommended storage temperature is 2-8°C. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	1.28 - 1.32 g/mL

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