Description

3,7-Diaminobiphenyl Sulfone-4,6-Disulfonic Acid is a high-purity, multi-functional aromatic intermediate featuring both sulfonic acid and diamine groups. This unique bifunctional structure makes it a valuable building block for synthesizing advanced dyes, pigments, and specialty polymers. It is primarily sought by manufacturers in the chemical synthesis, specialty dyes, and advanced materials sectors for creating products with enhanced solubility, color fastness, and thermal stability.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of high-performance, water-soluble azo dyes and pigments, particularly for textiles and inks.
• Polymer Modification: Used to introduce sulfonic acid groups into polymer chains, enhancing properties like hydrophilicity and ion-exchange capacity.
• Pharmaceutical Synthesis: Serves as a specialized intermediate in the synthesis of certain sulfa drugs and other active pharmaceutical ingredients (APIs).
• Liquid Crystal Materials: A potential monomer for creating sulfonated liquid crystal polymers with specific optical and electronic properties.
• Corrosion Inhibitor Formulation: Used in the development of advanced corrosion inhibitors for industrial water treatment systems.
• Chelating Agent Production: Acts as a starting material for synthesizing complexing agents used in metal ion sequestration.
• Research & Development: Employed in academic and industrial R&D for exploring new organic synthesis pathways and functional materials.

Basic Information

Product Name	3,7-Diaminobiphenyl Sulfone-4,6-Disulfonic Acid
CAS No.	80-76-2
Molecular Formula	C₁₂H₁₂N₂O₈S₃
Molecular Weight	408.43 g/mol
Synonyms	4,4'-Diaminodiphenylsulfone-3,3'-disulfonic Acid; Dapsone Disulfonic Acid; DADPS Disulfonic Acid; 3,3'-Disulfo-4,4'-diaminodiphenyl Sulfone; Bis(3-amino-4-sulfophenyl) Sulfone; 4,4'-Sulfonylbis(2-aminobenzenesulfonic Acid); DDS Disulfonic Acid; 80-76-2
EINECS	Contact for details

Quality Control

Our production of 3,7-Diaminobiphenyl Sulfone-4,6-Disulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and batch-to-batch consistency.

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). This compound is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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