Description

2,5-Dichlorobenzenesulfinic Acid Sodium Salt Monohydrate is a key organosulfur intermediate with a reactive sulfinate group. This compound matters for its utility in constructing complex molecules, particularly in pharmaceutical synthesis and advanced material research. It is needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for use as a building block in cross-coupling reactions and as a precursor to sulfones and sulfonamides.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those containing diaryl sulfone or sulfonamide moieties.
• Agrochemical Synthesis: Used in the research and production of herbicides, fungicides, and other crop protection agents.
• Cross-Coupling Reactions: Serves as a sulfinate source in transition metal-catalyzed reactions, such as palladium-catalyzed sulfonylation, to form C-S bonds.
• Polymer & Material Science: Employed as a monomer or modifier in the development of specialty polymers, including sulfonated polymers for ion-exchange membranes.
• Chemical Research: Utilized in academic and industrial R&D for exploring new synthetic methodologies and creating novel chemical entities.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of certain sulfonated dyes and organic pigments.

Basic Information

Product Name	2,5-Dichlorobenzenesulfinic Acid Sodium Salt Monohydrate
CAS No.	175278-63-4
Molecular Formula	C6H3Cl2NaO3S • H2O
Molecular Weight	267.06 g/mol (Anhydrous basis: 249.04 g/mol)
Synonyms	Sodium 2,5-dichlorobenzenesulfinate monohydrate; Benzenesulfinic acid, 2,5-dichloro-, sodium salt, monohydrate; 2,5-Dichlorobenzenesulfinate sodium salt hydrate; 2,5-Dichlorophenylsulfinic acid sodium salt monohydrate
EINECS	Contact for details

Quality Control

Our 2,5-Dichlorobenzenesulfinic Acid Sodium Salt Monohydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing results for assay, impurity profile, water content, and residual solvents is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	5.0 - 8.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Heavy Metals	≤ 20 ppm

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