Description

(±)-sec-Butyl Chloride CAS NO 53178-20-4 is a versatile organic intermediate, specifically a chiral secondary alkyl chloride. Its primary value lies in its reactivity as an alkylating agent and as a building block for more complex molecular structures in synthetic chemistry. This compound is essential for research and development chemists, process engineers, and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce the sec-butyl moiety into target molecules.

Application

• Pharmaceutical Intermediate: Key starting material or building block in the synthesis of active pharmaceutical ingredients (APIs), particularly where the sec-butyl group is a required pharmacophore.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides as an alkylating agent to modify biological activity.
• Organic Synthesis Reagent: Employed in nucleophilic substitution reactions (SN1/SN2) and Grignard reagent formation for constructing carbon-carbon bonds in fine chemical production.
• Polymer & Material Science: Acts as a monomer or chain transfer agent in controlled radical polymerization processes to create polymers with specific side-chain architectures.
• Chemical Research & Development: A valuable tool in methodological studies and catalyst development due to its reactivity as a model secondary alkyl halide.
• Flavor & Fragrance Industry: Potential intermediate in the synthesis of specific ester compounds used in fragrance compositions.

Basic Information

Product Name	(±)-sec-Butyl Chloride
CAS No.	53178-20-4
Molecular Formula	C4H9Cl
Molecular Weight	92.57 g/mol
Synonyms	2-Chlorobutane; sec-Butyl chloride; Butane, 2-chloro-; 2-Butyl chloride; (±)-2-Chlorobutane; 1-Methylpropyl chloride; Chlorobutane (sec); NSC 8415
EINECS	Contact for details

Quality Control

Our (±)-sec-Butyl Chloride is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request 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 such as strong bases and metals. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and concentration of vapors. Recommended storage temperature is 2-8°C (refrigerated) for long-term stability, though short-term storage at controlled room temperature (15-25°C) is acceptable.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Density (at 20°C)	0.87 - 0.88 g/mL
Boiling Point	68 - 70°C
Refractive Index (n20D)	1.396 - 1.398

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