Description

5-[[4-[[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]Salicylic Acid is a high-purity, polyfunctional azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and reactive functional groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid, high-performance colorants with excellent fastness properties.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block for the synthesis of high-value, complex azo dyes, particularly for textile fibers like wool, silk, and nylon.
• Specialty Ink Formulations: Used in the production of pigments for high-quality printing inks, including those for security and packaging applications.
• Functional Dye Synthesis: A precursor for dyes used in biological staining, pH indicators, and other analytical reagents due to its reactive sites.
• Research & Development: Employed in chemical R&D for creating novel chromophores and studying azo coupling reactions.
• Liquid Crystal Dyes (LCD): Potential use in the synthesis of dyes for display technologies, given its planar, conjugated structure.

Basic Information

Product Name	5-[[4-[[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]Salicylic Acid
CAS No.	85959-48-4
Molecular Formula	C30H21N5O8S
Molecular Weight	611.58 g/mol
Synonyms	Acid Red 359; C.I. 18200; 5-({4-[(4-{[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)diazenyl]phenyl}carbamoyl)phenyl]diazenyl}-2-hydroxybenzoic Acid; 7-Amino-4-hydroxy-3-{[4-({4-[(2-hydroxy-5-sulfophenyl)diazenyl]phenyl}carbamoyl)phenyl]diazenyl}naphthalene-2-sulfonic Acid; Salicylic acid, 5-[[4-[[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]amino]carbonyl]phenyl]azo]-; Azo Dye Intermediate AR359
EINECS	Contact for details

Quality Control

Our production of 5-[[4-[[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]Salicylic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided with every shipment.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%

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