Description

3-Diazonio-4-Hydroxy-1-Naphthalenesulfonic Acid is a specialized diazonium salt derivative of naphthalene, valued for its unique reactivity as a photoactive and electrophilic coupling agent. This compound matters for its role in synthesizing azo dyes, pigments, and advanced materials where precise molecular attachment is critical. It is primarily needed by research institutions and industrial manufacturers in the fine chemical, dye, and pharmaceutical intermediate sectors.

Application

• Key intermediate in the synthesis of high-value azo dyes and pigments for textiles and inks.
• Photoactive component in the development of photoresist materials and light-sensitive polymers.
• Electrophilic coupling agent for bioconjugation and labeling in biochemical research.
• Precursor for the manufacture of specialized pharmaceutical intermediates and agrochemicals.
• Used in analytical chemistry as a derivatization agent for spectroscopic analysis.
• Research chemical for exploring novel organic synthesis pathways and material science applications.

Basic Information

Product Name	3-Diazonio-4-Hydroxy-1-Naphthalenesulfonic Acid
CAS No.	16926-71-9
Molecular Formula	C₁₀H₇N₂O₄S
Molecular Weight	251.24 g/mol
Synonyms	4-Hydroxy-1-naphthalenesulfonic acid diazonium salt; 1-Naphthalenesulfonic acid, 4-hydroxy-3-diazenyl-; Diazohydroxynaphthalenesulfonic Acid; 3-Diazo-4-hydroxy-1-naphthalenesulfonate; 4-Hydroxy-3-diazo-1-naphthalenesulfonic acid; 3-Diazo-4-hydroxynaphthalene-1-sulfonic acid; 4-Hydroxynaphthalene-1-sulfonic acid-3-diazonium salt
EINECS	Contact for details

Quality Control

Our 3-Diazonio-4-Hydroxy-1-Naphthalenesulfonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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 light-sensitive and easily oxidized nature, it is recommended to handle and store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 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.