Description

Sodium 5-Amino-2-Anilinobenzenesulphonate is a high-purity, water-soluble aromatic sulfonate salt primarily used as a key intermediate in the synthesis of dyes and pigments. Its structure makes it a critical building block for creating azo dyes, which are valued for their colorfastness and vibrant hues. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable and consistent raw materials for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial diazo component in the synthesis of acid, direct, and reactive dyes for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics.
• Research & Development: Employed in chemical R&D for developing novel chromophores and specialty colorants.
• Photographic Chemicals: Can be utilized in the synthesis of certain photographic chemicals and color couplers.
• Chemical Synthesis: Acts as a versatile building block for other sulfonated aromatic compounds in fine chemical synthesis.

Basic Information

Product Name	Sodium 5-Amino-2-Anilinobenzenesulphonate
CAS No.	40306-23-8
Molecular Formula	C12H11N2NaO3S
Molecular Weight	286.28 g/mol
Synonyms	5-Amino-2-anilinobenzenesulfonic acid sodium salt; 2-Anilino-5-aminobenzenesulfonic acid sodium salt; Benzenesulfonic acid, 5-amino-2-(phenylamino)-, sodium salt (1:1); Sodium 5-amino-2-(phenylamino)benzenesulfonate; C.I. 37120; Sodium aniline-azobenzene sulfonate (related derivative).
EINECS	Contact for details

Quality Control

Our Sodium 5-Amino-2-Anilinobenzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent caking or degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Solubility (1% in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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