Description

4-[[4-[[6-Anilino-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-1-Naphthyl]Azo]Naphthalene-1,6-Disulphonic Acid, Ammonium Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart strong, stable coloration and its role as a key precursor in the synthesis of complex dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of acid dyes, direct dyes, and reactive dyes for textile fibers like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of high-grade organic pigments for inks, coatings, and plastics, where color strength and stability are paramount.
• Specialty Chemical Synthesis: Acts as a key precursor for creating complex chromophores in research and development of novel colorants and functional dyes.
• Biological Staining: Potential application in the formulation of histological stains and indicators for laboratory and diagnostic use.
• Analytical Reagents: Can be utilized in the development of colorimetric reagents and sensors for analytical chemistry applications.

Basic Information

Product Name	4-[[4-[[6-Anilino-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-1-Naphthyl]Azo]Naphthalene-1,6-Disulphonic Acid, Ammonium Sodium Salt
CAS No.	83221-60-7
Molecular Formula	C32H23N5O10S3 · xNa · yNH4
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 28440; 1,6-Naphthalenedisulfonic acid, 4,4'-[(6-anilino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]di-, sodium ammonium salt; Ammonium sodium 4-[[4-[[6-anilino-1-hydroxy-3-sulpho-2-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,6-disulphonate; Azo dye intermediate 83221-60-7; Black 210
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Freely soluble

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