Description

1-Hydroxy-4-Sulphonatonaphthalene-2-Diazonium is a specialized diazonium salt derivative of naphthalene, serving as a critical intermediate in the synthesis of azo dyes and pigments. Its core value lies in its ability to form stable, colored complexes, enabling the production of vibrant and durable colorants. This compound is essential for manufacturers in the dye and pigment, textile, and specialty chemical industries seeking high-purity intermediates for advanced color formulation.

Application

• Primary Intermediate for Azo Dyes & Pigments: Acts as a key coupling component in the synthesis of a wide range of orange, red, and brown azo colorants.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers, including cotton and polyester blends.
• Paper and Leather Coloring: Employed in the formulation of dyes for specialty paper products and leather finishes.
• Liquid Crystal Display (LCD) Color Filters: Serves as a precursor in the manufacture of high-precision colorants for electronic displays.
• Research & Development: Utilized in chemical research for developing novel chromophores and functional materials.
• Ink Formulation: A component in the synthesis of pigments for industrial printing inks.

Basic Information

Product Name	1-Hydroxy-4-Sulphonatonaphthalene-2-Diazonium
CAS No.	887-77-4
Molecular Formula	C₁₀H₇N₂O₄S⁻ (typically as a salt, e.g., zinc double salt)
Molecular Weight	251.24 g/mol (Free acid)
Synonyms	4-Sulfo-1-naphthol-2-diazonium; 2-Diazo-1-naphthol-4-sulfonic Acid; 1-Hydroxy-2-diazo-4-naphthalenesulfonic Acid; 1,2-Naphthoquinone-2-diazide-4-sulfonic Acid; Diazonaphthol Sulfonic Acid; Light Sensitive Orange Base; C.I. Azoic Diazo Component; Variamine Blue B Salt (related compound).
EINECS	Contact for details

Quality Control

Our 1-Hydroxy-4-Sulphonatonaphthalene-2-Diazonium is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and solubility are available upon request 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 area at a controlled room temperature (15-25°C). Due to its light-sensitive nature, containers must be kept in opaque packaging or amber glass. Isolate from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to orange powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 2.0%
Solubility	Soluble in alkaline aqueous solutions
Heavy Metals (as Pb)	Max. 20 ppm

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