Description

2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonic Acid is a specialized azo dye intermediate characterized by its distinct molecular structure containing sulphonic acid, nitro, and azo functional groups. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color fastness and compatibility with various substrates. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to produce 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 for textile fibers like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for applications in inks, coatings, and plastics where color stability is critical.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as a precursor for more complex chemical entities used in analytical reagents or functional materials.

Basic Information

Product Name	2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonic Acid
CAS No.	83006-42-2
Molecular Formula	C18H13N5O6S
Molecular Weight	427.39 g/mol
Synonyms	5-Nitro-2-[[4-[(4-hydroxyphenyl)azo]phenyl]amino]benzenesulfonic Acid; Benzenesulfonic acid, 2-[[4-[(4-hydroxyphenyl)azo]phenyl]amino]-5-nitro-; CI 18800; Acid Orange 74 (related dye class); Azo dye intermediate 83006-42-2; 2-Amino-5-nitrobenzenesulfonic acid azo derivative; 4-[(4-Hydroxyphenyl)azo]aniline coupled sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request 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 controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature (store away from light), prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline 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

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