Description

2-Amino-6-Hydroxybenzenesulfonic Acid is a key aromatic sulfonic acid derivative that serves as a versatile intermediate in advanced organic synthesis. Its molecular structure, featuring both amino and hydroxy functional groups ortho to the sulfonic acid, makes it a valuable building block for creating complex molecules with specific properties. This compound is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for the development of active ingredients and functional colorants.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with sulfonamide or azo-dye based structures.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and other crop protection agents where its sulfonic acid group aids in solubility and bioavailability.
• Dye and Pigment Manufacturing: Serves as a diazo component or coupling agent for producing azo dyes and pigments, especially for fibers and specialty applications.
• Chemical Research & Development: Employed as a building block in organic chemistry research for creating novel compounds and materials.
• Corrosion Inhibitor Formulation: Can be utilized in the development of specialty corrosion inhibitors for industrial water treatment systems.
• Polymer Modification: Acts as a monomer or additive to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.

Basic Information

Product Name	2-Amino-6-Hydroxybenzenesulfonic Acid
CAS No.	66621-35-0
Molecular Formula	C6H7NO4S
Molecular Weight	189.19 g/mol
Synonyms	6-Amino-3-hydroxybenzenesulfonic acid; 2-Amino-6-hydroxybenzene-1-sulfonic acid; 3-Hydroxy-6-aminobenzenesulfonic acid; 1,2-Benzisoxazole-5-sulfonic acid, 3-hydroxy- (related); 5-Sulfo-2-aminophenol; 2-Amino-6-phenol sulfonic acid; 6-Amino-3-phenolsulfonic acid
EINECS	Contact for details

Quality Control

Our 2-Amino-6-Hydroxybenzenesulfonic Acid is produced under a stringent 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 results from HPLC, IR, and titration methods. Our quality commitment supports compliance with cGMP and ISO standards for industrial and research applications.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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