Description

o-Chlorobenzoic Acid CAS NO 118-91-2 is a versatile chlorinated aromatic carboxylic acid that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both a carboxylic acid group and an ortho-positioned chlorine atom, makes it a valuable intermediate for introducing specific functionalities into target molecules. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop active ingredients, dyes, and performance materials with tailored properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs), including non-steroidal anti-inflammatory drugs (NSAIDs) and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, where the chlorobenzoate moiety contributes to biological activity.
• Dye and Pigment Manufacturing: Acts as an intermediate for synthesizing azo dyes and other complex colorants, providing structural stability and color fastness.
• Polymer Modification: Employed to functionalize polymers and resins, enhancing properties such as adhesion, thermal stability, and corrosion resistance in coatings and engineering plastics.
• Organic Synthesis Reagent: Utilized in coupling reactions, esterifications, and as a protecting group or directing agent in complex multi-step syntheses.
• Research and Development: Serves as a standard or starting material in academic and industrial R&D labs for exploring new chemical entities and reaction pathways.

Basic Information

Product Name	o-Chlorobenzoic Acid
CAS No.	118-91-2
Molecular Formula	C7H5ClO2
Molecular Weight	156.57 g/mol
Synonyms	2-Chlorobenzoic Acid; ortho-Chlorobenzoic Acid; 2-CBA; O-Chlorobenzoic Acid; Benzoic acid, 2-chloro-; 2-Chlorobenzenecarboxylic Acid; NSC 4034; 2-ClC6H4COOH
EINECS	204-285-4

Quality Control

Our o-Chlorobenzoic Acid is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for industrial and fine chemical applications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to guarantee traceability and compliance with your quality protocols.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	138°C - 142°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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