Description

Tetrasodium 5-Amino-4-Hydroxy-3-[[4'-[(2-Hydroxy-3,6-Disulphonato-1-Naphthyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure, featuring multiple sulfonate groups, provides excellent solubility and binding properties for creating vibrant and stable colorants. This compound is essential for manufacturers requiring precise and reliable dye synthesis for demanding applications. It serves as a critical building block in the production of specialized dyes for the textile, ink, and specialty coatings industries.

Application

• Primary Intermediate for Reactive Dyes: A key precursor in the synthesis of high-quality reactive dyes used for coloring cellulosic fibers like cotton and viscose.
• Textile Industry: Used in the manufacturing of dyes that offer excellent wash-fastness, light-fastness, and bright shades for fabrics.
• Inkjet Inks: Serves as an intermediate for producing colorants used in high-performance pigment-based and dye-based inks, ensuring color consistency and stability.
• Specialty Coatings and Paints: Employed in the development of colorants for industrial coatings where durability and specific hue requirements are critical.
• Paper Coloring: Used in the synthesis of dyes for specialty paper products requiring specific, stable coloration.
• Research & Development: A valuable compound for chemical R&D focused on novel chromophores, dye chemistry, and material science applications.

Basic Information

Item	Detail
Product Name	Tetrasodium 5-Amino-4-Hydroxy-3-[[4'-[(2-Hydroxy-3,6-Disulphonato-1-Naphthyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	68084-09-3
Molecular Formula	C40H24N6Na4O18S4
Molecular Weight	~1070.86 g/mol (as Tetrasodium salt)
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 Tetrasodium Salt; Tetrasodium 4-Amino-5-hydroxy-6-[[4'-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulfonate; C.I. 20505; Remazol Black B Salt; Levafix Black E-B; Dianix Black BG-SE; Polyazo Black Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity required for sensitive synthesis processes. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance and regulatory needs.

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 to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Purity (HPLC Area %)	Min. 90%
Moisture Content (KF)	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Sulfated Ash	Contact for details

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