Description

1-Chloro-2-Butene is a versatile chlorinated olefin intermediate with significant utility in organic synthesis. Its reactive allylic chloride structure makes it a valuable building block for the production of specialty chemicals and advanced materials. This compound is primarily sought by the pharmaceutical, agrochemical, and polymer industries for applications requiring precise chemical modifications.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Synthesis: Used in the manufacture of pesticides, herbicides, and other crop protection agents.
• Polymer & Resin Modifier: Acts as a reactive monomer or cross-linking agent in the production of specialty polymers and coatings.
• Organic Synthesis Reagent: Employed in various alkylation and addition reactions to introduce the butenyl moiety.
• Lubricant & Fuel Additive Component: Utilized in the formulation of performance-enhancing additives.
• Research & Development: A valuable reagent for chemical research in academic and industrial laboratories.

Basic Information

Product Name	1-Chloro-2-Butene
CAS No.	591-97-9
Molecular Formula	C4H7Cl
Molecular Weight	90.55 g/mol
Synonyms	Crotyl Chloride; (E)-1-Chloro-2-butene; (Z)-1-Chloro-2-butene; 2-Butenyl Chloride; 1-Chlorobut-2-ene; But-2-en-1-yl chloride; 1-Chloro-2-butylene; 1-Chlorocroton
EINECS	209-729-1

Quality Control

Our 1-Chloro-2-Butene is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets exacting standards for industrial and research applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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 nature, ensure containers are kept tightly sealed when not in use. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 98.0%
Isomer Ratio (E/Z)	Contact for details
Water Content (KF)	≤ 0.1%
Density (at 20°C)	~0.93 g/mL
Boiling Point	~84-86°C

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