Description

4-Aminophenol-2,6-Disulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile and high-value intermediate in advanced chemical synthesis. Its molecular structure, featuring both an amino and two sulfonic acid groups, makes it a critical precursor for manufacturing dyes, pigments, and specialty chemicals. This compound is essential for producers in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop complex, functionalized molecules.

Application

• Dye and Pigment Intermediate: Primary use as a key building block for synthesizing azo dyes, acid dyes, and reactive dyes, imparting color fastness and solubility.
• Pharmaceutical Synthesis: Acts as a crucial intermediate in the production of certain APIs (Active Pharmaceutical Ingredients) and diagnostic agents.
• Agrochemical Manufacturing: Used in the synthesis of advanced herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a valuable reagent for organic synthesis and material science research.
• Photographic Chemicals: Employed in the formulation of specific developers and other photographic processing agents.
• Corrosion Inhibitor Formulation: A component in specialty chemical blends designed to protect metal surfaces.

Basic Information

Product Name	4-Aminophenol-2,6-Disulfonic Acid
CAS No.	6362-53-4
Molecular Formula	C6H7NO7S2
Molecular Weight	269.25 g/mol
Synonyms	2,6-Disulfo-4-aminophenol; 4-Amino-2,6-dihydroxybenzenesulfonic Acid; 4-Amino-2,6-phenol disulfonic acid; 1-Hydroxy-2,6-disulfo-4-aminobenzene; 4-Aminophenol-2,6-disulfonate; Phenol, 4-amino-2,6-disulfo-; 4-Amino-1-hydroxybenzene-2,6-disulfonic acid
EINECS	228-875-7

Quality Control

Our 4-Aminophenol-2,6-Disulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, sulfonation degree, and related substances. Our quality commitment supports compliance with REACH and other global regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfonation Degree	Contact for details
Related Substances (HPLC)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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