Description

4-Biphenylsulfonic Acid, 4'-Amino- is a specialized aromatic sulfonic acid derivative featuring both sulfonic acid and amino functional groups on a biphenyl core. This unique bifunctional structure makes it a valuable intermediate and building block in advanced organic synthesis. It is primarily utilized in the research and production of dyes, pigments, and functional materials where precise molecular architecture is required.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other colorants for textiles, inks, and plastics.
• Pharmaceutical Intermediate: Used in research and development for creating active pharmaceutical ingredients (APIs) and diagnostic agents.
• Liquid Crystal and OLED Material Synthesis: Serves as a building block for advanced electronic and optoelectronic materials.
• Corrosion Inhibitor Formulation: Employed in the development of specialty chemicals for metal surface treatment and protection.
• Polymer Modification: Used to introduce sulfonic acid groups into polymers to alter solubility, ionic character, or other physical properties.
• Analytical Reagent: Acts as a standard or reagent in chemical analysis and research laboratories.

Basic Information

Item	Details
Product Name	4-Biphenylsulfonic Acid, 4'-Amino-
CAS No.	3365-89-7
Molecular Formula	C12H11NO3S
Molecular Weight	249.29 g/mol
Synonyms	4-Aminobiphenyl-4'-sulfonic Acid; 4'-Amino-4-biphenylsulfonic Acid; p-Aminobiphenyl-4'-sulfonic Acid; [1,1'-Biphenyl]-4-sulfonic acid, 4'-amino-; 4-Amino-1,1'-biphenyl-4'-sulfonic Acid; Biphenyl-4-sulfonic acid, 4'-amino-
EINECS	222-148-7

Quality Control

Our 4-Biphenylsulfonic Acid, 4'-Amino- is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, impurity profile, and physical characteristics. We are committed to meeting the specifications required for research and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.