Description

5-Amino-8-[(p-Aminophenyl)Azo]Naphthalene-2-Sulphonic Acid is a specialized azo dye intermediate with a distinct molecular structure that provides excellent chromophoric properties. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering strong color fastness and versatility in formulation. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes, direct dyes, and reactive dyes used for coloring wool, silk, nylon, and paper.
• Textile Industry: Used in the production of dyes that provide excellent wash and light fastness on natural and synthetic fibers.
• Ink Manufacturing: Employed in the formulation of printing inks, especially for applications requiring specific shades of yellow, orange, and red.
• Pigment Production: Acts as a precursor for the manufacture of organic pigments used in plastics, paints, and coatings.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.
• Specialty Chemicals: May be used in the synthesis of more complex chemical entities for analytical or photographic applications.

Basic Information

Product Name	5-Amino-8-[(p-Aminophenyl)Azo]Naphthalene-2-Sulphonic Acid
CAS No.	85-77-8
Molecular Formula	C16H15N5O3S
Molecular Weight	357.39 g/mol
Synonyms	5-Amino-8-[(4-aminophenyl)azo]naphthalene-2-sulfonic acid; 8-[(4-Aminophenyl)azo]-5-amino-2-naphthalenesulfonic acid; C.I. 37175; Acid Orange 60; Azoic Diazo Component 44; 1-Amino-4-[(8-amino-6-sulfo-2-naphthyl)azo]benzene; 4-[(8-Amino-6-sulfo-2-naphthyl)azo]aniline; 2-Naphthalenesulfonic acid, 5-amino-8-[(4-aminophenyl)azo]-
EINECS	201-632-5

Quality Control

Our production of 5-Amino-8-[(p-Aminophenyl)Azo]Naphthalene-2-Sulphonic Acid adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, UV-Vis, and FTIR. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request for quality assurance and regulatory 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). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
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)	Clear, orange-red solution

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