Description

3,3'-Carbonylbis(Benzenesulfonic Acid) is a specialized aromatic sulfonic acid derivative featuring a central carbonyl bridge. This compound is valued for its strong acidity and bifunctional structure, making it a versatile intermediate and catalyst in demanding chemical syntheses. It is primarily sought by manufacturers in the fine chemical, pharmaceutical, and polymer industries for applications requiring a robust organic acid source or a sulfonation precursor.

Application

• As a key intermediate in the synthesis of advanced dyes, pigments, and optical brighteners.
• As a catalyst or co-catalyst in organic synthesis, particularly in esterification and condensation reactions.
• In the production of ion-exchange resins and specialty polymers requiring sulfonic acid functional groups.
• As a building block for pharmaceutical active ingredients and agrochemicals.
• For research and development in electrolyte formulations and battery materials.
• In the manufacture of surfactants and other surface-active agents.

Basic Information

Product Name	3,3'-Carbonylbis(Benzenesulfonic Acid)
CAS No.	63113-59-7
Molecular Formula	C13H10O7S2
Molecular Weight	342.34 g/mol
Synonyms	3,3'-Carbonylbis(benzenesulfonic acid); Bis(3-sulfophenyl) ketone; 3,3'-Dicarbonyldibenzenesulfonic Acid; 3,3'-Ketodibenzenesulfonic Acid; 1,1'-(Carbonylbis(3,1-phenylene))bis(sulfonic acid); Benzenesulfonic acid, 3,3'-carbonylbis-; 3,3'-Dibenzenesulfonyl Ketone
EINECS	Contact for details

Quality Control

Our production of 3,3'-Carbonylbis(Benzenesulfonic Acid) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity and meets the specifications required for industrial and research applications. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and physical characteristics.

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 nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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