Description

Sodium 5-Amino-2-(4-Aminoanilino)Benzenesulphonate is a high-purity, water-soluble aromatic sulfonate salt of significant industrial importance. This compound serves as a critical intermediate and coupling agent in the synthesis of complex organic molecules, valued for its dual amino functionality and anionic character. It is primarily utilized by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries seeking to develop advanced colorants and active pharmaceutical ingredients (APIs).

Application

• Key Intermediate for Azo Dyes & Pigments: Serves as a crucial diazo component or coupling agent in the production of high-performance, water-soluble azo dyes for textiles, inks, and coatings.
• Pharmaceutical Synthesis: Used in the manufacture of specific active pharmaceutical ingredients (APIs) and diagnostic agents where its sulfonate and amino groups are integral to molecular structure and solubility.
• Specialty Chemical Manufacturing: Acts as a building block for synthesizing complex organic compounds, including liquid crystals, photographic chemicals, and corrosion inhibitors.
• Research & Development: Employed in academic and industrial R&D laboratories for exploring new synthetic pathways and developing novel functional materials.

Basic Information

Product Name	Sodium 5-Amino-2-(4-Aminoanilino)Benzenesulphonate
CAS No.	85135-98-4
Molecular Formula	C12H12N3NaO3S
Molecular Weight	301.30 g/mol
Synonyms	5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid sodium salt; Sodium 4,4'-diaminoazobenzene-2'-sulfonate; C.I. 37155; Benzenesulfonic acid, 5-amino-2-[(4-aminophenyl)amino]-, sodium salt (1:1); 2,4-Diaminophenyl-4'-aminophenylamine sulfonate sodium salt; Azobenzene-2'-sulfonic acid, 4,4'-diamino-, sodium salt; Diamine Scarlet B Base sodium sulfonate
EINECS	Contact for details

Quality Control

Our Sodium 5-Amino-2-(4-Aminoanilino)Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee consistency and support your quality assurance protocols.

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 sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Brownish to reddish powder or crystalline solid
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
Solubility (1% in Water)	Clear solution

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