Description

3,5-Diamino-4-Hydroxybenzenesulfonic Acid is a key aromatic sulfonic acid derivative, serving as a critical intermediate in the synthesis of complex organic molecules. Its value lies in its bifunctional reactivity, offering both amino and sulfonic acid groups for coupling and functionalization reactions. This compound is essential for manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries seeking to develop high-performance products.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of azo dyes, acid dyes, and reactive dyes, providing color fastness and solubility.
• Pharmaceutical Synthesis: Used as an intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Employed in organic synthesis for creating novel compounds with specific functional properties.
• Photographic Chemicals: Acts as a component in certain developers and other photo-sensitive formulations.
• Corrosion Inhibitor Precursor: Can be utilized in the formulation of specialty chemicals for metal surface treatment.
• Chelating Agent Synthesis: Serves as a starting material for producing ligands capable of binding metal ions.

Basic Information

Product Name	3,5-Diamino-4-Hydroxybenzenesulfonic Acid
CAS No.	5857-96-5
Molecular Formula	C6H8N2O4S
Molecular Weight	204.21 g/mol
Synonyms	4-Hydroxy-3,5-diaminobenzenesulfonic Acid; 2,4-Diaminophenol-6-sulfonic Acid; 3,5-Diamino-4-hydroxybenzenesulphonic Acid; 1-Hydroxy-2,4-diaminobenzene-6-sulfonic Acid; 2,6-Diaminohydroquinone-4-sulfonic Acid; 4-Hydroxy-m-phenylenediamine-6-sulfonic Acid; DAPS Acid (abbreviation); Contact for EINECS details.

Quality Control

Our 3,5-Diamino-4-Hydroxybenzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is provided and available upon request, supporting compliance with your internal quality standards.

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 to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 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.