Description

Sodium 2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonate is a high-purity azo dye intermediate and specialty chemical. This compound is valued for its precise chemical structure, which is critical for producing consistent and vibrant colorants. It is primarily required by manufacturers in the dye and pigment industries for synthesizing high-performance dyes used in textiles, inks, and specialty coatings.

Application

• Primary intermediate for the synthesis of azo dyes and pigments.
• Key component in manufacturing textile dyes for cotton, wool, and synthetic fibers.
• Used in the production of inks for printing and packaging applications.
• Precursor for specialty colorants used in plastics and polymers.
• Employed in research and development of novel chromophores and functional dyes.
• Potential use in the formulation of biological stains and analytical reagents.

Basic Information

Product Name	Sodium 2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonate
CAS No.	67674-21-9
Molecular Formula	C18H13N4NaO6S
Molecular Weight	436.37 g/mol
Synonyms	Acid Orange 61; C.I. 18965; Sodium 5-nitro-2-[[4-[(4-hydroxyphenyl)azo]phenyl]amino]benzenesulfonate; 2-[[4-[(4-Hydroxyphenyl)azo]phenyl]amino]-5-nitrobenzenesulfonic acid sodium salt; Benzenesulfonic acid, 2-[[4-[(4-hydroxyphenyl)azo]phenyl]amino]-5-nitro-, sodium salt; Azo dye intermediate 67674-21-9
EINECS	Contact for details

Quality Control

Our production of Sodium 2-[[4-[(4-Hydroxyphenyl)Azo]Phenyl]Amino]-5-Nitrobenzenesulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. The material is manufactured under a robust quality management system. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance processes.

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	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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