Description

3-Phenylsulphonylbenzenesulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a high-value intermediate in advanced organic synthesis. Its unique bifunctional structure, featuring both a sulfonyl and a sulfonic acid group, makes it a critical building block for creating complex molecules with tailored properties. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the manufacture of modern herbicides, fungicides, and plant growth regulators requiring specific sulfonic acid functionalities.
• Dye & Pigment Manufacturing: Acts as a sulfonating agent and intermediate in the production of acid dyes and high-performance organic pigments.
• Polymer & Resin Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity, ion-exchange capacity, or catalytic activity.
• Catalyst & Ligand Preparation: Serves as a starting material for synthesizing specialized organocatalysts or metal-complexing ligands used in fine chemical processes.
• Research & Development: A valuable tool in academic and industrial R&D for exploring new reaction pathways and developing novel chemical entities.

Basic Information

Product Name	3-Phenylsulphonylbenzenesulphonic Acid
CAS No.	63113-57-5
Molecular Formula	C12H10O5S2
Molecular Weight	298.33 g/mol
Synonyms	3-(Phenylsulfonyl)benzenesulfonic Acid; Benzenesulfonic acid, 3-(phenylsulfonyl)-; m-(Phenylsulfonyl)benzenesulfonic Acid; 3-Phenylsulfonylbenzenesulfonic Acid; 1,1'-Sulfonylbis[3-benzene sulfonic acid] (related); Diphenyl sulfone-3,3'-disulfonic acid (related); Phenyl 3-sulfophenyl sulfone
EINECS	Contact for details

Quality Control

Every batch of 3-Phenylsulphonylbenzenesulphonic Acid is manufactured and tested under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its strong acid nature, containers should be kept tightly sealed and constructed of compatible materials (e.g., glass, HDPE, or PTFE). Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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