Description

7-[[4-[[4-[[7-(Acetylamino)-1-Hydroxy-3-Sulfo-2-Naphthalenyl]Azo]-1-Naphthalenyl]Azo]-6-Sulfo-1-Naphthalenyl]Azo]-1,3-Naphthalenedisulfonic Acid Tetrasodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart strong, vibrant colors and its excellent binding properties in complex formulations. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical sectors for the synthesis of high-performance dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulose fibers.
• Textile Colorant Production: Used in manufacturing dyes for the textile industry, offering good wash and light fastness.
• Ink and Toner Formulations: Serves as a colorant precursor in the production of inks for digital printing and toners.
• Specialty Pigment Synthesis: Employed in creating complex organic pigments for plastics, coatings, and paints.
• Laboratory and R&D: Used as a standard or research chemical for developing new chromophores and studying dye chemistry.
• Paper Coloring: Can be utilized in the production of dyes for specialty paper products.
• Biological Staining: Potential use as a starting material for histological stains in life sciences.

Basic Information

Item	Details
Product Name	7-[[4-[[4-[[7-(Acetylamino)-1-Hydroxy-3-Sulfo-2-Naphthalenyl]Azo]-1-Naphthalenyl]Azo]-6-Sulfo-1-Naphthalenyl]Azo]-1,3-Naphthalenedisulfonic Acid Tetrasodium Salt
CAS No.	71873-48-8
Molecular Formula	C48H28N8Na4O19S6
Molecular Weight	~1292.98 g/mol (Contact for exact details)
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 7-[[4-[[4-[[7-(acetylamino)-1-hydroxy-3-sulphonato-2-naphthyl]azo]-1-naphthyl]azo]-6-sulphonato-1-naphthyl]azo]-1,3-naphthalenedisulphonate; Reactive Black 5 related intermediate; Azo dye intermediate CAS 71873-48-8; 1,3-Naphthalenedisulfonic acid, 7-[[4-[[4-[[7-(acetylamino)-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-1-naphthalenyl]azo]-6-sulfo-1-naphthalenyl]azo]-, tetrasodium salt
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 purity. Each lot is analyzed against established specifications for identity, assay, and impurity profiles. A Certificate of Analysis (COA) detailing purity (typically >95% by HPLC), relevant physical parameters, and test results is provided with every shipment to support your quality assurance processes.

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

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Water Content (KF)	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.