Description

3-Chloro-4-Hydroxybenzoic Acid is a versatile chlorinated phenolic acid derivative that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both a carboxylic acid and a halogenated phenol group, makes it an essential intermediate for creating high-value compounds with specific functional properties. This product is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the development of active ingredients and performance materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for antimicrobial and anti-inflammatory agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its phenolic and halogenated properties.
• Liquid Crystal Materials: Serves as a core component in the manufacture of advanced liquid crystal polymers and displays.
• Polymer Modifier: Acts as a monomer or additive to introduce chlorine and phenolic functionalities into engineering plastics, enhancing flame retardancy and stability.
• Dye and Pigment Intermediate: Utilized in the synthesis of complex organic dyes and pigments, especially azo dyes.
• UV Stabilizer Precursor: A starting material for producing benzophenone and benzotriazole-type UV absorbers used in coatings and plastics.

Basic Information

Product Name	3-Chloro-4-Hydroxybenzoic Acid
CAS No.	3964-58-7
Molecular Formula	C7H5ClO3
Molecular Weight	172.57 g/mol
Synonyms	4-Hydroxy-3-chlorobenzoic Acid; 3-Chloro-4-hydroxybenzoic acid; 3-Chloro-4-hydroxy-benzoic acid; 3-Chloro-4-hydroxybenzoic acid (8CI); Benzoic acid, 3-chloro-4-hydroxy-; 3-Chloro-4-hydroxybenzoic acid (VAN); 3-Chloro-4-hydroxybenzoic acid (6CI); 3-Chloro-4-hydroxybenzoic acid (7CI); NSC 403697
EINECS	223-567-4

Quality Control

Our 3-Chloro-4-Hydroxybenzoic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area 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	215°C - 220°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.