Description

Sodium Hydrogen 4-Aminobenzene-1,3-Disulphonate is a key aromatic sulfonate intermediate with significant industrial utility. This compound is valued for its dual sulfonic acid groups and aniline functionality, making it a versatile building block for the synthesis of more complex molecules. It is primarily sought by manufacturers in the dye, pigment, and specialty chemical sectors for producing high-performance colorants and functional additives.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles and leather.
• Optical Brightener Production: Used in the manufacture of stilbene-based optical brightening agents (OBAs) for paper, detergents, and textiles.
• Pharmaceutical Intermediate: Serves as a building block for certain sulfonamide-based active pharmaceutical ingredients (APIs) and diagnostic agents.
• Water Treatment Chemicals: Acts as a monomer or intermediate in the production of scale and corrosion inhibitors.
• Specialty Surfactants: Utilized to create anionic surfactants with specific dispersing and emulsifying properties.
• Chemical Research & Development: Employed in organic synthesis and as a standard in analytical chemistry laboratories.

Basic Information

Product Name	Sodium Hydrogen 4-Aminobenzene-1,3-Disulphonate
CAS No.	68466-09-1
Molecular Formula	C6H6NNaO6S2
Molecular Weight	275.23 g/mol
Synonyms	4-Amino-m-benzenedisulfonic acid monosodium salt; Sodium 4-amino-1,3-benzenedisulfonate; 2-Amino-5-sulfobenzoic acid sulfonate sodium salt; 4-Amino-1,3-benzenedisulfonic acid, sodium salt; Aniline-2,4-disulfonic acid sodium salt; 2,4-Disulfoaniline sodium salt; 4-Aminobenzene-1,3-disulfonate monosodium salt
EINECS	Contact for details

Quality Control

Our Sodium Hydrogen 4-Aminobenzene-1,3-Disulphonate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity and compliance with agreed specifications. A detailed Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided with each shipment to guarantee traceability and quality assurance for your processes.

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 after opening to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline 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.