Description

Tetrasodium 2-[[4-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulphonato-2-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]-1-Naphthyl]Azo]Benzene-1,4-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure provides excellent chromophore properties, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, colorfast products.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton, wool, and nylon fibers.
• Direct Dye Production: Used in manufacturing direct dyes for paper and textile applications requiring good wet fastness.
• Pigment Manufacturing: Serves as a precursor for producing lakes and organic pigments used in inks, plastics, and paints.
• Specialty Chemical Synthesis: Employed in research and development for creating novel chromophores and functional dyes.
• Biological Staining: Potential use in the synthesis of histological stains for laboratory and diagnostic applications.

Basic Information

Product Name	Tetrasodium 2-[[4-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulphonato-2-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]-1-Naphthyl]Azo]Benzene-1,4-Disulphonate
CAS No.	6428-58-6
Molecular Formula	C46H28N8Na4O16S4
Molecular Weight	~1125.0 g/mol
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 4,4',4'',4'''-(1-Hydroxy-6-(phenylamino)-3-sulfo-2-naphthyl)azo-7-sulfo-1-naphthyl)azo-1-naphthyl)azo-benzene-1,4-disulfonate; Polyazo Black Dye Intermediate; Azo Dye Intermediate 6428-58-6; 1,3,6-Naphthalenetrisulfonic acid, 7,7'-(1-hydroxy-6-((4-sulfophenyl)amino)-2-naphthalenyl)azo)bis-, sodium salt (1:?); C.I. Mordant Black 17 (related).
EINECS	Contact for details

Quality Control

Our Tetrasodium 2-[[4-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulphonato-2-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]-1-Naphthyl]Azo]Benzene-1,4-Disulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are provided with each shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

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

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