Description

2-Hydroxy-6-Nitro-3-Sulfonato-1-Naphthalenediazonium is a specialized diazonium salt derivative of naphthalene, engineered for high-performance coupling reactions. This compound is valued for its ability to form stable, intensely colored azo dyes and pigments under controlled conditions. It is a critical intermediate for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and durable colorants.

Application

• Primary intermediate for the synthesis of high-value azo dyes and pigments.
• Coupling agent in the production of colorants for textile fibers and fabrics.
• Key component in manufacturing colorants for inks, including printing and packaging inks.
• Used in the synthesis of specialized dyes for leather and paper.
• Intermediate for research and development of novel functional dyes and optical materials.
• Potential use in the preparation of colorimetric sensors and analytical reagents.

Basic Information

Product Name	2-Hydroxy-6-Nitro-3-Sulfonato-1-Naphthalenediazonium
CAS No.	68516-79-0
Molecular Formula	C₁₀H₅N₃O₇S
Molecular Weight	311.23 g/mol
Synonyms	6-Nitro-2-hydroxy-3-sulfo-1-naphthalenediazonium; 1-Diazo-2-hydroxy-6-nitro-3-naphthalenesulfonic Acid; 2-Hydroxy-6-nitro-3-sulfo-1-naphthalenediazonium Inner Salt; 6-Nitro-2-naphthol-3-sulfonic acid diazonium salt; Fast Scarlet R Base; Naphthol AS-SG Base
EINECS	Contact for details

Quality Control

Our production of 2-Hydroxy-6-Nitro-3-Sulfonato-1-Naphthalenediazonium adheres to stringent quality protocols to ensure batch-to-batch consistency and performance in sensitive coupling reactions. Each lot is analyzed for critical parameters including purity, diazonium content, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and strictly light-sensitive nature, the container must be kept sealed under dry, inert conditions and opened only in a darkroom or under safe light to prevent decomposition.

Specification

Item	Specification
Appearance	Yellow to Orange Powder or Crystals
Identification (IR)	Conforms to Structure
Assay (Diazonium Content)	Min. 95%
Purity (HPLC)	Min. 98%
Water Content (KF)	Max. 2.0%
Solubility	Soluble in Water, Alkaline Solutions

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