Description

2-[[2-Amino-6-[[4-[[4-[(3-Carboxy-4-Hydroxyphenyl)Azo]-7-Sulpho-1-Naphthyl]Azo]-2,5-Dimethoxyphenyl]Azo]-5-Hydroxy-7-Sulpho-1-Naphthyl]Azo]-5-Nitrobenzoic Acid is a complex, high-purity azo dye intermediate of significant industrial importance. Its intricate poly-azo structure is engineered to deliver exceptional color strength and specific light-fastness properties in demanding applications. This compound is a critical raw material for manufacturers of specialized dyes and pigments, particularly for textiles, inks, and high-performance coatings where precise color characteristics and stability are paramount.

Application

• Production of High-Performance Dyes: Primary intermediate for synthesizing complex polyazo direct dyes and reactive dyes, especially for cotton and other cellulosic fibers.
• Specialty Ink Formulations: Used in the manufacture of pigments for inks requiring high color value and specific spectral properties, including security and textile printing inks.
• Industrial Pigments: Serves as a key precursor for creating pigments used in plastics, paints, and coatings that demand excellent durability.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be employed as a complexometric indicator or a reagent in specific analytical methodologies due to its distinct color-changing properties.

Basic Information

Item	Detail
Product Name	2-[[2-Amino-6-[[4-[[4-[(3-Carboxy-4-Hydroxyphenyl)Azo]-7-Sulpho-1-Naphthyl]Azo]-2,5-Dimethoxyphenyl]Azo]-5-Hydroxy-7-Sulpho-1-Naphthyl]Azo]-5-Nitrobenzoic Acid
CAS No.	84963-15-5
Molecular Formula	C45H30N10O17S2
Molecular Weight	1047.90 g/mol
Synonyms	Direct Black 166 (Parent Dye); Polyazo Dye Intermediate; 5-Nitro-2-[[2-amino-6-[[4-[[4-[(3-carboxy-4-hydroxyphenyl)azo]-7-sulfo-1-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-5-hydroxy-7-sulfo-1-naphthyl]azo]benzoic Acid; Azo Dye C.I. 30026; Benzoic acid, 5-nitro-2-[[2-amino-6-[[4-[[4-[(3-carboxy-4-hydroxyphenyl)azo]-7-sulfo-1-naphthalenyl]azo]-2,5-dimethoxyphenyl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-; Black 166 Intermediate; Tetrakisazo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques including HPLC and spectrophotometry to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, 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, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The material is light-sensitive and should be stored away from direct light exposure to prevent degradation.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in NaOH)	Complete, clear solution

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