Description

3-Chlorocatechol is a versatile chlorinated dihydroxybenzene derivative that serves as a critical synthetic intermediate in advanced organic chemistry. Its unique structure, featuring both phenolic hydroxyl groups and a chloro substituent, makes it a valuable building block for constructing complex molecules with specific electronic and steric properties. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop active ingredients, functional materials, and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those with catechol-based structures, such as certain adrenergic agents and enzyme inhibitors.
• Agrochemical Synthesis: Building block for manufacturing herbicides, fungicides, and plant growth regulators that require a halogenated phenolic core.
• Polymer Chemistry: Monomer or modifier for producing specialty polymers, resins, and antioxidants, imparting enhanced stability and functionality.
• Dye and Pigment Manufacturing: Intermediate in the production of complex organic dyes, pigments, and colorants.
• Chemical Research & Development: Valuable reagent in organic synthesis for introducing the chlorocatechol moiety into target molecules during medicinal and process chemistry.
• Coordination Chemistry: Ligand for metal complexation in catalytic systems and material science applications.

Basic Information

Product Name	3-Chlorocatechol
CAS No.	4018-65-9
Molecular Formula	C6H5ClO2
Molecular Weight	144.56 g/mol
Synonyms	3-Chloro-1,2-benzenediol; 3-Chloropyrocatechol; 1,2-Dihydroxy-3-chlorobenzene; 3-Chloro-1,2-dihydroxybenzene; 3-Chlorocatechol; 3-CC; Pyrocatechol, 3-chloro-
EINECS	223-676-3

Quality Control

Our 3-Chlorocatechol is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with global regulatory frameworks, and our quality systems are designed to meet the stringent requirements of pharmaceutical and fine chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 may affect product quality. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light tan crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	82 - 86 °C
Loss on Drying	≤ 1.0 %
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residue on Ignition	≤ 0.1 %

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