Description

4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]-8-[(4-Sulphobenzoyl)Amino]Naphthalene-2-Sulphonic Acid is a high-purity, multi-functional azo dye intermediate. This compound is valued for its complex molecular structure, which provides excellent chromophoric properties and binding affinity, making it a critical precursor for synthesizing specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants with enhanced light and wash fastness.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-grade reactive dyes for cotton and cellulose fiber dyeing.
• Specialty Pigment Manufacturing: Production of complex organic pigments for inks, coatings, and plastics requiring high color strength.
• Textile Colorants: Key component in formulating dyes for textiles demanding superior brightness and durability.
• Functional Dye Synthesis: Building block for dyes used in optical data storage, laser printing, and other advanced technological applications.
• Research & Development: Used in academic and industrial R&D for developing novel chromophores and studying azo dye chemistry.
• Analytical Chemistry: Potential use as a complexometric indicator or a reagent in specific analytical methods due to its chelating sulfonic acid groups.

Basic Information

Item	Details
Product Name	4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]-8-[(4-Sulphobenzoyl)Amino]Naphthalene-2-Sulphonic Acid
CAS No.	26079-12-9
Molecular Formula	C35H25N5O13S3
Molecular Weight	843.79 g/mol
Synonyms	Acid Black 210; C.I. 30027; 4-Hydroxy-3-({4-[(2-hydroxy-7-sulfo-1-naphthyl)diazenyl]-2,5-dimethoxyphenyl}diazenyl)-8-[(4-sulfobenzoyl)amino]naphthalene-2-sulfonic acid; 8-[(4-Sulfobenzoyl)amino]-4-hydroxy-3-[[4-[(2-hydroxy-7-sulfo-1-naphthalenyl)azo]-2,5-dimethoxyphenyl]azo]-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 8-[(4-sulfobenzoyl)amino]-4-hydroxy-3-[[4-[(2-hydroxy-7-sulfo-1-naphthalenyl)azo]-2,5-dimethoxyphenyl]azo]-; Reactive Black 5 related intermediate; Azo dye intermediate 26079-12-9
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]-8-[(4-Sulphobenzoyl)Amino]Naphthalene-2-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and compliance.

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 to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water, alkaline solutions

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