Description

2,5-Dichlorobenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical building block in advanced chemical synthesis. Its value lies in its dual functionality, acting as both a strong acid catalyst and a precursor for introducing the sulfonate group into target molecules. This compound is essential for manufacturers in the agrochemical, pharmaceutical, and specialty dye industries who require high-purity intermediates for the production of active ingredients and functional materials.

Application

• Agrochemical Intermediate: A key precursor in the synthesis of herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a building block for creating sulfonamide-based active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Serves as an intermediate for producing acid dyes and other colorants.
• Catalyst and Reagent: Functions as a strong acid catalyst in organic reactions, including esterification and alkylation.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways.

Basic Information

Product Name	2,5-Dichlorobenzenesulfonic Acid
CAS No.	88-42-6
Molecular Formula	C6H4Cl2O3S
Molecular Weight	227.06 g/mol
Synonyms	2,5-Dichlorobenzenesulphonic Acid; Benzenesulfonic acid, 2,5-dichloro-; 2,5-Dichlorophenylsulfonic Acid; 2,5-DCBSA; 2,5-Dichlorobenzene-1-sulfonic Acid; NSC 403119; 2,5-Dichlorosulfobenzoic Acid (related form)
EINECS	201-832-8

Quality Control

Our 2,5-Dichlorobenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing results from HPLC, titration, and other relevant tests to guarantee consistency and compliance with your requirements.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and incompatible 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	< 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.