Description

5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, synthetic organic chemical compound valued for its role as a key intermediate in the production of specialized dyes and pigments. Its complex molecular structure, featuring azo and sulphonic acid groups, provides excellent chromophoric properties and water solubility, making it essential for creating vivid and stable colors. This product is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for developing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of high-value, water-soluble azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics where color strength and stability are paramount.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-color relationships.
• Analytical Chemistry: Can be utilized as a standard or reagent in chromatographic analysis and dye-testing methodologies.

Basic Information

Product Name	5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	85455-42-1
Molecular Formula	C25H21N4O9S3
Molecular Weight	617.65 g/mol
Synonyms	5-Acetamido-4-hydroxy-3-((2-methyl-5-(phenylaminosulfonyl)phenyl)azo)naphthalene-2,7-disulfonic acid; C.I. Acid Orange 156; Acid Orange 156; Azo dye intermediate 85455-42-1; 3-[[2-Methyl-5-[(phenylamino)sulfonyl]phenyl]azo]-5-(acetylamino)-4-hydroxy-2,7-naphthalenedisulfonic acid; 5-Acetylamino-4-hydroxy-3-[2-methyl-5-(phenylaminosulfonyl)phenylazo]naphthalene-2,7-disulphonic acid
EINECS	Contact for details

Quality Control

Our production of 5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet exacting specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance with your quality standards.

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 strong oxidizing agents and incompatible materials. For long-term storage, consider conditions that minimize exposure to moisture and temperature fluctuations.

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	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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