Description

3-[[4-[[6-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-3,5-Dimethylphenyl]Azo]Naphthalene-1,5-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, stable colors with excellent fastness properties.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers, providing excellent wash and light fastness.
• Production of Acid Dyes: Used in manufacturing acid dyes for wool, silk, and nylon, offering a broad spectrum of bright and deep shades.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments used in high-performance inks, coatings, and plastics.
• Textile Printing Inks: A vital component in formulating inks for digital and screen printing on textiles, ensuring color consistency and durability.
• Liquid Crystal Dyes (LCDs): Potential use in the development of dyes for display technologies due to its specific light-absorbing properties.
• Biological Staining Reagents: Can be utilized in research and diagnostic applications as a staining agent in histology and cytology.

Basic Information

Product Name	3-[[4-[[6-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-3,5-Dimethylphenyl]Azo]Naphthalene-1,5-Disulphonic Acid, Sodium Salt
CAS No.	83950-06-5
Molecular Formula	C35H25N6O10S3Na3 (or related sodium salt form)
Molecular Weight	Contact for details
Synonyms	Acid Black 210 (C.I. 300310)
C.I. Acid Black 210
3-[[4-[[6-[(4-Aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthyl]azo]-3,5-dimethylphenyl]azo]naphthalene-1,5-disulfonic acid trisodium salt
Naphthalene-1,5-disulfonic acid, 3-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthyl]azo]-3,5-dimethylphenyl]azo]-, sodium salt (1:3)
Trisodium 3-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-3,5-dimethylphenyl]azo]naphthalene-1,5-disulfonate
Dye Intermediate for Acid Black 210
Black 210 Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency for downstream synthesis. Quality is verified through comprehensive analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods to confirm identity, purity, and key functional group content. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with 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 handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content (KF)	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 3.0%

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