Description

6-Amino-7-Hydroxynaphthalene-2-Sulphonic Acid is a key aromatic sulfonic acid derivative, serving as a crucial intermediate in the synthesis of complex organic molecules. Its value lies in its bifunctional amino and hydroxyl groups, which allow for versatile chemical modifications and coupling reactions. This compound is primarily needed by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for producing high-value specialty chemicals.

Application

• Dye and Pigment Intermediate: A vital precursor for the synthesis of azo dyes, acid dyes, and reactive dyes, contributing to color strength and fastness properties.
• Pharmaceutical Synthesis: Used as a building block in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Manufacturing: Employed in the synthesis of advanced herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a versatile reagent for organic synthesis and material science research.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic developers and sensitizers.
• Corrosion Inhibitor Formulation: Acts as a component in specialty chemical blends designed to protect metal surfaces.

Basic Information

Product Name	6-Amino-7-Hydroxynaphthalene-2-Sulphonic Acid
CAS No.	6399-72-0
Molecular Formula	C₁₀H₉NO₄S
Molecular Weight	239.25 g/mol
Synonyms	7-Hydroxy-6-aminonaphthalene-2-sulfonic acid; 2-Amino-8-hydroxynaphthalene-6-sulfonic acid; 6-Amino-7-hydroxy-2-naphthalenesulfonic acid; 7-Hydroxy-6-amino-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 6-amino-7-hydroxy-; J acid isomer; gamma acid (isomer); 6-Amino-7-naphthol-2-sulfonic acid
EINECS	229-025-9

Quality Control

Our 6-Amino-7-Hydroxynaphthalene-2-Sulphonic Acid is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms
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 ≤ 2.0%
Solubility	Soluble in alkaline solutions; slightly soluble in water

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