Description

Zinc 2,2'-Dihydroxy-1,1'-Azonaphthalene-4-Sulphonate is a coordination complex of zinc with a sulfonated azo dye ligand, known for its vibrant color and chelating properties. This compound is valued for its ability to impart stable coloration and act as a functional additive in specialized industrial processes. It is primarily utilized by manufacturers in the pigments, coatings, and specialty chemical synthesis sectors seeking high-performance colorants and metal-complexing agents.

Application

• Pigment and Dye Intermediate: Serves as a key precursor or colorant component for producing high-quality industrial pigments and dyes.
• Functional Additive for Coatings: Used in specialty coatings and inks to provide color, UV stability, and corrosion inhibition properties.
• Analytical Chemistry Reagent: Employed as a complexometric indicator or a chromogenic agent in various analytical and laboratory procedures.
• Metal Surface Treatment: Acts as a component in formulations for metal finishing and surface conversion coatings.
• Research & Development: Utilized in chemical R&D for synthesizing novel coordination compounds and studying azo dye chemistry.
• Specialty Polymer Additive: Incorporated into polymers to introduce color or modify material properties through metal-ion interaction.

Basic Information

Product Name	Zinc 2,2'-Dihydroxy-1,1'-Azonaphthalene-4-Sulphonate
CAS No.	5410-93-5
Molecular Formula	C₂₀H₁₂N₂O₈S₂Zn
Molecular Weight	537.82 g/mol
Synonyms	Zinc 2,2'-Dihydroxy-1,1'-azonaphthalene-4-sulfonate; Zinc 4-Sulfo-2,2'-dihydroxy-1,1'-azonaphthalene Complex; C.I. Mordant Yellow 5; Acid Yellow 99; 1,1'-Azonaphthalene-2,2'-diol, 4,4'-disulfonic acid, zinc complex; Zinc 1,1'-Azo-2,2'-naphthalenediol-4-sulfonate; Zinc Mordant Yellow 5; Zinc Salt of 2,2'-Dihydroxy-1,1'-azonaphthalene-4-sulfonic Acid
EINECS	226-518-9

Quality Control

Our Zinc 2,2'-Dihydroxy-1,1'-Azonaphthalene-4-Sulphonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical composition. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is available for every shipment to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (Zinc Content)	Min. 11.5%
Loss on Drying	Max. 2.0%
Sulfated Ash	Reported
Heavy Metals (as Pb)	Max. 20 ppm
Solubility	Soluble in water, slightly soluble in organic solvents

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