Description

2,5-Dichlorobenzenesulfonic Acid Dihydrate is a versatile aromatic sulfonic acid derivative, primarily valued as a key synthetic intermediate and building block in advanced organic synthesis. Its significance lies in its dual functionality, offering both a strongly acidic sulfonic acid group and reactive chlorine substituents for further chemical modifications. This compound is essential for manufacturers and R&D chemists in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to create active ingredients, dyes, and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a benzenesulfonic acid moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the dichloro-substituted benzene ring provides specific biological activity.
• Dye and Pigment Manufacturing: Acts as a starting material or sulfonating agent in the creation of sulfonated azo dyes and other colorants.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Chemical Research & Development: A valuable building block in organic chemistry for constructing more complex molecules in medicinal and materials chemistry.
• Catalyst and Surfactant Precursor: Can be utilized to synthesize specialized surfactants or metal-complexing agents used in various industrial processes.

Basic Information

Product Name	2,5-Dichlorobenzenesulfonic Acid Dihydrate
CAS No.	38484-94-5
Molecular Formula	C6H5Cl2O3S · 2H2O
Molecular Weight	273.09 g/mol (Dihydrate)
Synonyms	2,5-Dichlorobenzenesulfonic Acid Hydrate; Benzenesulfonic acid, 2,5-dichloro-, dihydrate; 2,5-Dichlorophenylsulfonic Acid Dihydrate; 2,5-DCBSA Dihydrate; 2,5-Dichlorobenzene-1-sulfonic Acid Dihydrate
EINECS	Contact for details

Quality Control

Our 2,5-Dichlorobenzenesulfonic Acid Dihydrate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) detailing results for assay, related substances, water content, and other critical parameters are provided with every shipment to guarantee traceability and batch-to-batch consistency for your manufacturing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 to prevent absorption of atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	11.0 - 14.0 %
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.