Description

3,4-Dichloro-1-Butene is a versatile chlorinated organic intermediate with significant utility in fine chemical synthesis. Its bifunctional structure, featuring both a reactive alkene and chlorine substituents, makes it a valuable building block for constructing more complex molecules. This compound is primarily sought after by R&D chemists and process development teams in the pharmaceutical and agrochemical industries for creating active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those requiring a chlorinated butene backbone.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, where its chlorinated structure is incorporated into the final molecule.
• Polymer & Resin Modifier: Serves as a monomer or cross-linking agent in the manufacture of specialty polymers, imparting specific chemical resistance or physical properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, nucleophilic substitution, and other transformations to introduce functionalized four-carbon chains.
• Liquid Crystal & Electronic Chemical Production: Acts as a starting material for synthesizing advanced materials used in displays and electronics.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways and developing novel compounds in academic and industrial labs.

Basic Information

Product Name	3,4-Dichloro-1-Butene
CAS No.	760-23-6
Molecular Formula	C4H6Cl2
Molecular Weight	124.99 g/mol
Synonyms	1-Butene, 3,4-dichloro-; 3,4-Dichlorobut-1-ene; 3,4-Dichloro-1-butylene; Dichlorobutene; NSC 60545; 3,4-Dichlorobutene-1; (3,4-Dichlorobut-1-enyl) (CAS 760-23-6)
EINECS	212-077-9

Quality Control

Our 3,4-Dichloro-1-Butene is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile and strong acid/organic solvent nature, it should be kept separate from strong oxidizers, bases, and metals. Recommended storage temperature is 2-8°C for extended stability, though short-term storage at controlled room temperature (15-25°C) is acceptable for in-use containers.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	1.18 - 1.22
Refractive Index (20°C)	1.468 - 1.472

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