Description

1,4-Benzenedisulfonyl Dichloride is a high-purity, versatile sulfonyl chloride derivative essential for advanced organic synthesis. Its dual reactive sites make it a critical building block for constructing complex molecules with sulfonamide or sulfonate linkages. This compound is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for creating active ingredients, functional monomers, and advanced materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including diuretics, antivirals, and carbonic anhydrase inhibitors.
• Agrochemical Synthesis: Used to manufacture sulfonylurea herbicides and other crop protection agents requiring a disulfonated aromatic core.
• Polymer & Material Science: Serves as a cross-linking agent or monomer for producing high-performance polymers, ion-exchange resins, and sulfonated membranes for fuel cells.
• Dye & Pigment Manufacturing: Intermediate for creating sulfonated dyes and optical brighteners with enhanced water solubility and fiber affinity.
• Ligand & Chelator Production: Building block for synthesizing specialized ligands used in catalysis and metal ion sequestration.
• Chemical Research (R&D): A valuable reagent for exploring new synthetic pathways and developing novel chemical entities in academic and industrial laboratories.

Basic Information

Product Name	1,4-Benzenedisulfonyl Dichloride
CAS No.	6461-77-4
Molecular Formula	C6H4Cl2O4S2
Molecular Weight	275.13 g/mol
Synonyms	p-Benzenedisulfonyl Dichloride; Terephthaloyl Sulfonyl Chloride; 1,4-Dichlorosulfonylbenzene; Benzene-1,4-disulfonyl Dichloride; p-Phenylenedisulfonyl Dichloride; NSC 403821; Terephthalic Acid Disulfonyl Chloride
EINECS	229-265-8

Quality Control

Our 1,4-Benzenedisulfonyl Dichloride is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets the high standards required for sensitive synthetic applications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and consistent performance.

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). This product is hygroscopic (moisture-sensitive) and reacts with water and strong bases; ensure the container is kept tightly sealed in a dry environment. Keep away from heat, open flames, and incompatible materials such as strong acids, organic solvents, and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	190°C - 195°C
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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