Description

Trisodium 5-[[4'-[[4-[(4-Amino-7-Sulphonato-1-Naphthyl)Azo]-6-Sulphonato-1-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate is a high-purity, water-soluble azo dye intermediate known for its complex polyazo structure. This compound is valued for its ability to impart specific color properties and is a critical precursor in the synthesis of advanced dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary intermediate for the synthesis of direct and reactive dyes used in textile dyeing and printing.
• Key component in the production of high-value pigments for inks, coatings, and plastics.
• Used in research and development for creating novel functional dyes with specific light-absorption properties.
• Potential use as a colorimetric reagent or indicator in analytical chemistry applications.
• Employed in the manufacturing of specialty dyes for paper and leather products.

Basic Information

Item	Details
Product Name	Trisodium 5-[[4'-[[4-[(4-Amino-7-Sulphonato-1-Naphthyl)Azo]-6-Sulphonato-1-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	6360-29-8
Molecular Formula	C46H28N7Na3O13S3
Molecular Weight	1044.90 g/mol
Synonyms	Direct Black 19 (sodium salt); C.I. 35255; Trisodium 5-[(4'-[(4-[(4-amino-7-sulfonato-1-naphthyl)azo]-6-sulfonato-1-naphthyl)azo][1,1'-biphenyl]-4-yl)azo]salicylate; Polyazo dye intermediate; Azo dye CAS 6360-29-8; 1,1'-Biphenyl derivative dye; Salicylate-based azo compound
EINECS	228-873-5

Quality Control

Our production of this advanced dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed 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%
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	7.0 - 9.0

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