Description

Tetrasodium 7-[[4-[[4-[(4-Hydroxyphenyl)Azo]-2-Methylphenyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Naphthalene-1,3,5-Trisulphonate is a high-purity, water-soluble azo dye intermediate characterized by its multiple sulphonate groups, which impart excellent solubility and substantivity. This compound matters as a critical building block for synthesizing complex, high-value dyes and pigments, particularly for applications requiring strong color fastness and stability. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key precursor in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Textile Printing Inks: Used in the formulation of inks for digital and screen printing on textiles, providing bright hues.
• Specialty Pigment Synthesis: Serves as a starting material for creating complex organic pigments used in plastics and coatings.
• Biological Staining Agent: Potential use in the development of histological stains for microscopy due to its azo chromophore structure.
• Research & Development: Employed in chemical R&D for studying azo coupling reactions and developing novel chromophores.

Basic Information

Product Name	Tetrasodium 7-[[4-[[4-[(4-Hydroxyphenyl)Azo]-2-Methylphenyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Naphthalene-1,3,5-Trisulphonate
CAS No.	83733-25-9
Molecular Formula	C39H24N6Na4O13S4
Molecular Weight	~1010.86 g/mol
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 4-hydroxy-3-((4-((4-((7-sulfo-1-naphthyl)azo)-2-methylphenyl)azo)phenyl)azo)naphthalene-1,3,5-trisulfonate; 7-[[4-[[4-[(4-Hydroxyphenyl)azo]-2-methylphenyl]azo]-7-sulfo-1-naphthyl]azo]-1,3,5-naphthalenetrisulfonic acid tetrasodium salt; Reactive Black 5 related intermediate; Azo dye intermediate for black shades
EINECS	Contact for details

Quality Control

Our Tetrasodium 7-[[4-[[4-[(4-Hydroxyphenyl)Azo]-2-Methylphenyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Naphthalene-1,3,5-Trisulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye synthesis. Certificates of Analysis (COA) documenting all critical parameters are available upon request 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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