Description

2,7-Naphthalenedisulfonic Acid, 4-[(2,4-Dihydroxyphenyl)Azo]-5-Hydroxy-, Coupled With Diazotized 2-Amino-4,6-Dinitrophenol, Sodium Salts is a high-purity, complex azo dye intermediate. This compound is valued for its precise chemical structure, which is critical for imparting specific color and performance characteristics in advanced applications. It is primarily required by manufacturers in the dye and pigment industries, as well as for specialized research and development in color chemistry.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Used in the coloration of textiles, leather, and paper products.
• Potential component in the formulation of specialized inks and toners for printing applications.
• Acts as a key precursor in research for developing novel functional dyes with specific light-absorption properties.
• May be utilized in the production of colorants for plastics and polymers.
• Employed in analytical chemistry as a reference standard or reagent.

Basic Information

Product Name	2,7-Naphthalenedisulfonic Acid, 4-[(2,4-Dihydroxyphenyl)Azo]-5-Hydroxy-, Coupled With Diazotized 2-Amino-4,6-Dinitrophenol, Sodium Salts
CAS No.	91671-95-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Mordant Black 17; Acid Chrome Dark Blue; 4-[(2,4-Dihydroxyphenyl)azo]-5-hydroxy-2,7-naphthalenedisulfonic acid, coupled with diazotized 2-amino-4,6-dinitrophenol, sodium salts; Mordant Black 17; Chromogen Dark Blue; Azo Mordant Dye Intermediate; Sodium 4-[(2,4-dihydroxyphenyl)azo]-5-hydroxy-2,7-naphthalenedisulfonate coupled product
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is controlled to meet precise specifications for identity, purity, and performance. Certificates of Analysis (COA) 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Solubility	Soluble in water

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