Description

4-Chloro-3-Hydroxybenzoic Acid is a versatile chlorinated hydroxybenzoic acid derivative that serves as a critical building block in advanced organic synthesis. This compound is valued for its bifunctional structure, featuring both a carboxylic acid and a phenolic hydroxyl group, which allows for selective chemical modifications. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for developing active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with anti-inflammatory or antimicrobial properties.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its halogenated aromatic structure.
• Liquid Crystal & Polymer Chemistry: Acts as a monomer or modifying agent in the synthesis of specialty polymers and liquid crystal materials for electronic displays.
• Dye & Pigment Manufacturing: Serves as an intermediate for producing azo dyes and other complex colorants.
• Research & Development: Employed in academic and industrial R&D labs for method development and exploring new synthetic pathways.
• Coordination Chemistry: Functions as a ligand for metal complexes in catalytic and material science applications.

Basic Information

Product Name	4-Chloro-3-Hydroxybenzoic Acid
CAS No.	3413-69-4
Molecular Formula	C7H5ClO3
Molecular Weight	172.57 g/mol
Synonyms	3-Hydroxy-4-chlorobenzoic acid; 4-Chloro-3-hydroxybenzoic acid; 4-Chloro-3-hydroxy-benzoic acid; Benzoic acid, 4-chloro-3-hydroxy-; 4-Chloro-3-hydroxybenzoesäure (German); Acide 4-chloro-3-hydroxybenzoïque (French); 4-Chloro-3-hydroxybenzoic acid (CAS 3413-69-4)
EINECS	222-309-1

Quality Control

Our 4-Chloro-3-Hydroxybenzoic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting all critical parameters. We adhere to cGMP principles where applicable to guarantee traceability and consistency for our global customer base.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	218°C - 222°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.