Description

4-Amino-1,3-Benzenedisulfonic Acid Disodium Salt is a high-purity, water-soluble aromatic sulfonate salt that serves as a critical intermediate in advanced chemical synthesis. Its value lies in its dual sulfonic acid groups and reactive amino functionality, enabling precise molecular construction for specialized applications. This compound is essential for manufacturers and R&D laboratories in the dye, pharmaceutical, and agrochemical sectors seeking reliable, high-quality building blocks.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, reactive dyes, and optical brighteners, contributing to color fastness and brilliance.
• Pharmaceutical Synthesis: Used as a building block for creating sulfonamide-based active pharmaceutical ingredients (APIs) and other specialty drug molecules.
• Agrochemical Manufacturing: Employed in the production of herbicides and fungicides where the sulfonic acid group enhances solubility and bioavailability.
• Chemical Research & Development: Serves as a versatile intermediate for coupling reactions and the development of new functional materials and ligands.
• Surfactant and Detergent Industry: Can be utilized to synthesize specialized anionic surfactants with unique solubility and emulsifying properties.
• Photographic Chemicals: Acts as a component in the formulation of certain photographic developers and sensitizers.

Basic Information

Item	Details
Product Name	4-Amino-1,3-Benzenedisulfonic Acid Disodium Salt
CAS No.	63589-41-3
Molecular Formula	C6H5NNa2O6S2
Molecular Weight	313.22 g/mol
Synonyms	1,3-Benzenedisulfonic acid, 4-amino-, disodium salt; 4-Amino-m-benzenedisulfonic acid disodium salt; Sodium 4-amino-1,3-benzenedisulfonate; 2,4-Disulfanilic acid disodium salt; 4-Aminobenzene-1,3-disulfonic acid disodium salt; Metanilic acid disodium salt derivative; Azoic diazo component intermediate
EINECS	Contact for details

Quality Control

Our 4-Amino-1,3-Benzenedisulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and research use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability, consistency, and compliance with your requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect 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
Solubility (in Water)	Clear, colorless solution

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