Description

4-Ethylbenzoyl Chloride is a versatile aromatic acid chloride derivative, serving as a critical building block in advanced organic synthesis. Its primary value lies in its high reactivity as an acylating agent, enabling the efficient introduction of the 4-ethylbenzoyl moiety into target molecules. This compound is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediates: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of novel therapeutic agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where the ethylbenzoyl group contributes to biological activity.
• Polymer & Material Science: Acts as a monomer or modifier in the synthesis of specialty polymers, liquid crystals, and advanced organic materials.
• Dye & Pigment Manufacturing: Intermediate for producing complex organic dyes and pigments with specific colorfastness and stability properties.
• Organic Synthesis Reagent: A fundamental reagent for Friedel-Crafts acylation and other reactions to create ketones, amides, and esters in research and development.
• Fine Chemical Production: Employed in the multi-step synthesis of complex fragrance compounds, UV stabilizers, and other high-value fine chemicals.

Basic Information

Product Name	4-Ethylbenzoyl Chloride
CAS No.	16331-45-6
Molecular Formula	C9H9ClO
Molecular Weight	168.62 g/mol
Synonyms	p-Ethylbenzoyl Chloride; 4-Ethylbenzoic Acid Chloride; (4-Ethylphenyl)carbonyl Chloride; 4-Ethyl-Benzoylchlorid; 4-Ethylbenzoylchloride; 1-(Chlorocarbonyl)-4-ethylbenzene; Benzoic acid, 4-ethyl-, chloride
EINECS	Contact for details

Quality Control

Our 4-Ethylbenzoyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and highly volatile; containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent hydrolysis and degradation. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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