Description

6-Amino-4-Hydroxy-2-Naphthalenesulfonic Acid is a high-purity, versatile naphthalene derivative essential for advanced organic synthesis. This compound serves as a critical intermediate and coupling agent in the production of high-value dyes, pigments, and functional materials. It is primarily needed by manufacturers in the specialty chemicals, pharmaceutical, and agrochemical sectors for developing products with specific optical and chemical properties.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing azo dyes, acid dyes, and reactive dyes, particularly for textiles and inks.
• Pharmaceutical Synthesis: Used as a precursor in the development of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Formulations: Employed in the synthesis of specialized pesticides and herbicides that require specific light-absorbing or binding characteristics.
• Functional Material Production: Acts as a monomer or modifier in the creation of polymers, liquid crystals, and optical brighteners.
• Research & Development: Serves as a standard or reagent in chemical research for studying sulfonation and amination reactions.
• Chemical Sensor Development: Utilized in the fabrication of sensors due to its specific chromophoric and ion-binding properties.

Basic Information

Item	Detail
Product Name	6-Amino-4-Hydroxy-2-Naphthalenesulfonic Acid
CAS No.	139123-65-2
Molecular Formula	C₁₀H₉NO₄S
Molecular Weight	239.25 g/mol
Synonyms	6-Amino-4-hydroxy-2-naphthalenesulfonic acid; 4-Amino-6-hydroxy-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-; 6-Amino-4-hydroxynaphthalene-2-sulfonic acid; AHNSA; 139123-65-2; 6-Amino-4-hydroxy-naphthalene-2-sulfonic acid
EINECS	Contact for details

Quality Control

Our 6-Amino-4-Hydroxy-2-Naphthalenesulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry and customer specifications. Comprehensive Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

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 powder
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
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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