Description

2-Aminonaphthalene-7-Sulfonic 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 structure, containing both an amine and a sulfonic acid group, which makes it a versatile building block for creating dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the dyestuff, pharmaceutical, and agrochemical industries seeking high-purity intermediates for advanced synthesis.

Application

• Dye and Pigment Intermediate: A primary precursor in the manufacture of azo dyes, acid dyes, and other colorants.
• Pharmaceutical Synthesis: Used as a building block for creating active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Agrochemical Production: Serves as an intermediate in the synthesis of certain herbicides, pesticides, and plant growth regulators.
• Research & Development: A valuable reagent in organic chemistry research for constructing naphthalene-based compounds.
• Chemical Synthesis: Utilized in coupling reactions and as a starting material for more complex sulfonated aromatic compounds.
• Corrosion Inhibitor Formulation: Can be used in the development of specialty chemicals for metal surface treatment.

Basic Information

Product Name	2-Aminonaphthalene-7-Sulfonic Acid
CAS No.	494-44-0
Molecular Formula	C₁₀H₉NO₃S
Molecular Weight	223.25 g/mol
Synonyms	7-Amino-2-naphthalenesulfonic Acid; 2-Naphthylamine-7-sulfonic Acid; 7-Amino-2-naphthylsulfonic Acid; 2-Amino-7-naphthalenesulfonic Acid; 7-Amino-2-naphthalenesulphonic Acid; 2-Amino-7-naphthalenesulphonic Acid; 2,7-Cleve's Acid; F-Acid
EINECS	207-791-2

Quality Control

Our 2-Aminonaphthalene-7-Sulfonic 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 every shipment, detailing all critical quality attributes. Our commitment to consistent quality and traceability supports your process reliability and final product performance.

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 tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

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.