Description

5-Amino-1,3-Benzenedissulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative. This compound serves as a critical intermediate in the synthesis of dyes, pigments, and specialty chemicals, valued for its dual sulfonic acid groups and reactive amino functionality. It is essential for manufacturers in the dye, pharmaceutical, and agrochemical industries seeking to produce high-performance, water-soluble compounds.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, direct dyes, and reactive dyes, particularly azo dyes, due to its ability to enhance water solubility and color fastness.
• Pharmaceutical Synthesis: Used as an intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, pesticides, and other crop protection chemicals.
• Chemical Research & Development: Serves as a versatile reagent for organic synthesis and material science research.
• Corrosion Inhibitor Formulation: Used in the production of specialty chemicals for water treatment and metal surface treatment.
• Photographic Chemical: Can be utilized in the synthesis of chemicals for photographic and imaging applications.

Basic Information

Product Name	5-Amino-1,3-Benzenedissulfonic Acid
CAS No.	5294-05-3
Molecular Formula	C6H7NO6S2
Molecular Weight	253.25 g/mol
Synonyms	5-Amino-m-benzenedisulfonic Acid; 1,3-Benzenedisulfonic acid, 5-amino-; 5-Amino-1,3-benzenedisulfonate; Aniline-2,4-disulfonic Acid; 2,4-Disulfoaniline; 5-Aminobenzene-1,3-disulfonic Acid; Metanilic Acid Disulfonate; 5-Amino-1,3-phenylene disulfonic acid
EINECS	226-138-5

Quality Control

Our 5-Amino-1,3-Benzenedissulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay, related substances, and other critical parameters is provided with each shipment to guarantee traceability and compliance.

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, strong bases, and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Off-white to light brown 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
Related Substances (HPLC)	Total impurities ≤ 2.0%

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