Description

Trisodium 5-[[4'-[[8-[(2,4-Diaminophenyl)Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure, featuring multiple sulfonate groups, provides excellent chromophoric properties and solubility, making it a critical precursor for synthesizing high-value dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, stable colors with specific application performance.

Application

This advanced azo dye intermediate is engineered for high-performance applications where color strength and chemical stability are paramount.

• Primary Intermediate for Reactive Dyes: Synthesis of high-grade reactive dyes for cotton, wool, and nylon textiles.
• Direct Dye Production: Manufacturing of direct dyes for paper, leather, and cellulosic fibers.
• Specialty Ink Formulations: Key component in producing pigments for inks used in packaging, security printing, and digital textiles.
• Biological Staining Agents: Potential use as a precursor for histological stains and biological markers in laboratory settings.
• Functional Dye Synthesis: Building block for dyes used in liquid crystal displays (LCDs), lasers, and other optoelectronic devices.
• Research & Development: Serves as a standard or starting material for novel chromophore research in academic and industrial R&D labs.

Basic Information

Product Name	Trisodium 5-[[4'-[[8-[(2,4-Diaminophenyl)Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	6505-12-0
Molecular Formula	C41H28N8Na3O11S2
Molecular Weight	933.79 g/mol
Synonyms	Salicylic acid, 5-[[4'-[[8-[(2,4-diaminophenyl)azo]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, trisodium salt; C.I. 29160; Trisodium 5-[(4'-[(8-[(2,4-diaminophenyl)azo]-1-hydroxy-3,6-disulphonato-2-naphthyl)azo]-3,3'-dimethylbiphenyl-4-yl)azo]salicylate; Polyazo dye intermediate 6505-12-0; Direct Black 19 intermediate (related); Trisodium salt of azo salicylic acid derivative.
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 purity for your synthesis processes. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay, heavy metal content, sulfated ash, and other critical parameters is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect purity and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Water Content (KF)	Max. 5.0%
Sulfated Ash	20.0% - 25.0%
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Freely soluble, clear solution

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