Description

5-[[4'-[[8-[[2,4-dihydroxy-3-[(2-methoxy-5-sulphophenyl)azo]phenyl]azo]-1-hydroxy-3,6-disulpho-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]salicylic acid, sodium salt is a high-purity, polyazo dye intermediate of significant commercial importance. This compound is valued for its ability to impart deep, vibrant colors with excellent fastness properties in demanding applications. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants. The product is supplied with full traceability and quality documentation to ensure batch-to-batch consistency for critical industrial processes.

Application

• Textile Dyeing: As a key intermediate for synthesizing high-grade, wash-fast and light-fast dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments for industrial inks, including packaging, textile printing, and security inks.
• Specialty Coatings: Serves as a colorant precursor in coatings for plastics, leather, and paper where color stability is paramount.
• Liquid Crystal Display (LCD) Color Filters: Potential use in the synthesis of dyes for advanced electronic display applications.
• Biological Staining: May be utilized in the development of histological stains for microscopy, given its complex chromophore structure.
• Research & Development: Employed as a standard or building block in organic synthesis and color chemistry research.

Basic Information

Product Name	5-[[4'-[[8-[[2,4-dihydroxy-3-[(2-methoxy-5-sulphophenyl)azo]phenyl]azo]-1-hydroxy-3,6-disulpho-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]salicylic acid, sodium salt
CAS No.	94021-36-0
Molecular Formula	C46H30N8O18S3Na3 (or related sodium salt form)
Molecular Weight	~1180 g/mol (Contact for exact details)
Synonyms	Salicylic acid, 5-[[4'-[[8-[[2,4-dihydroxy-3-[(2-methoxy-5-sulfophenyl)azo]phenyl]azo]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-, trisodium salt; C.I. Mordant Black 17 (related); Polyazo dye intermediate; Trisodium 5-[4'-[8-[2,4-dihydroxy-3-[(2-methoxy-5-sulfonatophenyl)diazenyl]phenyl]diazenyl]-1-hydroxy-3,6-disulfonato-2-naphthyl]diazenyl]-3,3'-dimethoxybiphenyl-4-yl]diazenyl]-2-hydroxybenzoate; Azo dye precursor for black/brown shades.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch is analyzed to confirm identity, purity, and consistency using modern analytical techniques. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters such as assay, impurity profile, and physical specifications. We ensure compliance with relevant industry standards and can support customer-specific quality requirements upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in water)	Partially soluble, forms colloidal solution

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