Description

4-Chloro-3-Ethylbenzoic Acid is a versatile halogenated aromatic carboxylic acid building block of significant importance in advanced organic synthesis. Its molecular structure, featuring both chloro and ethyl substituents on the benzoic acid core, makes it a critical intermediate for constructing more complex molecules with tailored properties. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key starting material or intermediate in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring a substituted benzoic acid scaffold.
• Agrochemical Synthesis: Used in the research and production of herbicides, fungicides, and plant growth regulators where its aromatic structure contributes to biological activity.
• Liquid Crystal & OLED Material Precursor: Serves as a building block for synthesizing advanced organic electronic materials and liquid crystal compounds.
• Polymer Modifier: Can be incorporated as a monomer or additive to modify the thermal and chemical resistance properties of specialty polymers and resins.
• Organic Synthesis Reagent: Employed in academic and industrial R&D for coupling reactions, esterifications, and as a precursor for further functional group transformations.
• Dye & Pigment Intermediate: Acts as an intermediate in the manufacture of complex dyes and organic pigments.

Basic Information

Product Name	4-Chloro-3-Ethylbenzoic Acid
CAS No.	42044-90-6
Molecular Formula	C9H9ClO2
Molecular Weight	184.62 g/mol
Synonyms	3-Ethyl-4-chlorobenzoic Acid; Benzoic acid, 4-chloro-3-ethyl-; 4-Chloro-3-ethyl-benzoic acid; 4-Chloro-m-ethylbenzoic Acid; 42044-90-6; 3-Ethyl-4-chloro-benzoic acid; 4-Chloro-3-ethylbenzoicacid; 4-Chloro-3-ethyl-benzoesäure
EINECS	Contact for details

Quality Control

Our 4-Chloro-3-Ethylbenzoic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	< 20 ppm
Residue on Ignition	≤ 0.1%

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