Description

2,6-Dichlorobenzenesulfonic acid is a versatile aromatic sulfonic acid derivative characterized by its two chlorine substituents in the ortho positions relative to the sulfonic acid group. This compound serves as a critical building block and intermediate in the synthesis of more complex molecules, particularly in the fine chemical and pharmaceutical sectors. It is primarily sought after by R&D chemists and process engineers in the agrochemical, pharmaceutical, and dye manufacturing industries for its reactive sulfonyl and halogen functionalities.

Application

• Pharmaceutical Intermediate: Key starting material for synthesizing active pharmaceutical ingredients (APIs), especially sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the dichlorobenzene scaffold is required.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating sulfonated azo dyes and other colorants, providing solubility and ionic character.
• Polymer Modification: Employed as a monomer or additive to introduce sulfonic acid groups into polymers for ion-exchange resins or materials with specific hydrophilic properties.
• Chemical Research & Development: Serves as a versatile reagent in organic synthesis for introducing the 2,6-dichlorobenzenesulfonyl moiety into target molecules.
• Catalyst and Ligand Preparation: Used in the synthesis of specialized ligands or organocatalysts for asymmetric synthesis and other catalytic processes.

Basic Information

Product Name	2,6-Dichlorobenzenesulfonic Acid
CAS No.	6697-96-7
Molecular Formula	C6H4Cl2O3S
Molecular Weight	227.06 g/mol
Synonyms	2,6-Dichlorobenzenesulphonic Acid; Benzenesulfonic acid, 2,6-dichloro-; 2,6-Dichlorophenylsulfonic Acid; NSC 403107; 2,6-Dichlorobenzene-1-sulfonic Acid; 2,6-Dichlorosulfobenzoic Acid (related); 2,6-DCBSA
EINECS	229-758-9

Quality Control

Our 2,6-Dichlorobenzenesulfonic acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, which includes results from HPLC, NMR, and titration methods. Our quality commitment ensures the material meets the stringent requirements for use as a high-purity chemical intermediate.

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). This material is hygroscopic (moisture-sensitive) and a strong acid; ensure the container is kept tightly sealed to exclude moisture and stored separately from bases and reactive materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 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.