Description

(Z)-1-Chlorobut-2-Ene is a versatile halogenated alkene building block with significant synthetic utility. Its primary value lies in its role as a reactive intermediate for introducing the chlorobutene moiety into more complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries engaged in fine chemical synthesis and material science development.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the synthesis of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Organic Synthesis Reagent: Employed in various name reactions, including coupling and cyclization reactions, to construct complex organic frameworks.
• Liquid Crystal & Electronic Chemical Precursor: Utilized in the synthesis of intermediates for liquid crystal displays and other electronic materials.
• Flavor & Fragrance Industry: Functions as a starting material for the synthesis of specific aroma compounds.

Basic Information

Product Name	(Z)-1-Chlorobut-2-Ene
CAS No.	4628-21-1
Molecular Formula	C4H7Cl
Molecular Weight	90.55 g/mol
Synonyms	(Z)-1-Chloro-2-butene; (Z)-2-Butenyl chloride; cis-1-Chloro-2-butene; (Z)-Crotyl chloride; 1-Chloro-2-butene (Z)-; cis-Crotyl chloride; (2Z)-1-Chlorobut-2-ene; But-2-en-1-yl chloride, (Z)-
EINECS	225-041-7

Quality Control

Our (Z)-1-Chlorobut-2-Ene is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure high chemical purity and isomeric consistency. A detailed Certificate of Analysis (COA) confirming identity, purity, and impurity profile is provided with every shipment to guarantee traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials such as strong bases and oxidizing agents. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature: 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0% (Z-isomer)
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 3.0%
Density (20°C)	0.92 - 0.96 g/mL
Refractive Index (n20D)	1.435 - 1.445

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