Description

5-Amino-8-Nitronaphthalene-2-Sulfonic Acid is a high-purity, specialized naphthalene derivative used as a critical intermediate in advanced chemical synthesis. Its value lies in its unique bifunctional structure, containing both an amino and a nitro group on the naphthalene ring system, which makes it a versatile building block for creating complex molecules. This compound is essential for manufacturers in the dye, pigment, and pharmaceutical industries seeking to develop products with specific optical or reactive properties.

Application

• Dye and Pigment Intermediate: A key precursor for synthesizing azo dyes, acid dyes, and other complex colorants, particularly for textiles and inks.
• Pharmaceutical Synthesis: Serves as a building block in the research and production of active pharmaceutical ingredients (APIs) and other bioactive compounds.
• Chemical Research & Development: Used in organic synthesis laboratories to create novel naphthalene-based structures for material science and agrochemical research.
• Functional Material Production: Employed in the synthesis of optical brighteners, fluorescent markers, and other specialty functional chemicals.

Basic Information

Product Name	5-Amino-8-Nitronaphthalene-2-Sulfonic Acid
CAS No.	6357-74-0
Molecular Formula	C₁₀H₈N₂O₅S
Molecular Weight	268.25 g/mol
Synonyms	8-Nitro-5-aminonaphthalene-2-sulfonic acid; 5-Amino-8-nitronaphthalene-2-sulphonic acid; 2-Naphthalenesulfonic acid, 5-amino-8-nitro-; 1-Amino-4-nitro-6-naphthalenesulfonic acid; 6-Amino-3-nitronaphthalene-2-sulfonic acid; 5-Amino-8-nitro-2-naphthalenesulfonic acid; 1,6-Cleve's acid 8-nitro derivative
EINECS	228-775-8

Quality Control

Our 5-Amino-8-Nitronaphthalene-2-Sulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment and is available upon request.

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 after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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