Description

Trisodium 4-Hydroxy-5-[[5-Sulphonato-4-[(p-Tolyl)Amino]Naphthyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specific, high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and stable colorants.

Application

• Primary Intermediate for Dye Synthesis: Serves as a crucial building block in the production of acid dyes and direct dyes, particularly for nylon, wool, and silk.
• Textile Industry: Used in the manufacturing of dyes for coloring natural and synthetic fibers, offering good wash and light fastness properties.
• Inkjet and Printing Inks: Employed in the formulation of specialized inks where color strength and solubility are critical parameters.
• Paper Coloring: Applicable in the production of dyes for high-quality paper and specialty paper products.
• Biological Staining: Potential use as a staining agent in histology and microscopy due to its specific chromophoric structure.
• Research & Development: Serves as a standard or intermediate in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	Trisodium 4-Hydroxy-5-[[5-Sulphonato-4-[(p-Tolyl)Amino]Naphthyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	10359-95-2
Molecular Formula	C27H18N3Na3O11S3
Molecular Weight	~749.59 g/mol
Synonyms	Acid Black 210; C.I. 28440; Trisodium 4-hydroxy-5-{[4-[(4-methylphenyl)amino]-5-sulfonato-1-naphthyl]diazenyl}naphthalene-2,7-disulfonate; 4-Hydroxy-5-{[4-[(4-methylphenyl)amino]-5-sulfonato-1-naphthyl]diazenyl}naphthalene-2,7-disulfonic acid trisodium salt; 1-Naphthalenesulfonic acid, 4-[(4-methylphenyl)amino]-5-[[4-hydroxy-2,7-disulfo-5-naphthalenyl)azo]-, trisodium salt; p-Tolylaminoazonaphthalene trisulfonate sodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 4-Hydroxy-5-[[5-Sulphonato-4-[(p-Tolyl)Amino]Naphthyl]Azo]Naphthalene-2,7-Disulphonate adheres to stringent quality protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting key parameters 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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Solubility (in Water)	Freely soluble

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