Description

2-Naphthalenesulfonic acid, 4-hydroxy-6-(phenylamino)-, coupled with diazotized 2-methyl-5-nitrobenzenesulfonic acid-p-phenylenediamine reaction products, sodium salts is a specialized, high-performance azo dye intermediate and colorant. This compound is engineered to deliver consistent, vibrant color properties and is critical for applications requiring specific hue and stability. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking reliable and high-quality dye components.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance azo dyes for textiles and fabrics.
• Industrial Ink Formulation: Used in the production of pigments for printing inks, including packaging and publication inks.
• Specialty Coatings and Paints: Imparts color and functional properties to industrial and decorative coatings.
• Leather Dyeing: Employed in the dyeing process for leather goods to achieve durable and uniform coloration.
• Paper Coloring: Suitable for the coloration of specialty papers and paper products.
• Research & Development: Serves as a chemical reagent in R&D labs for developing new colorants and functional materials.

Basic Information

Product Name	2-Naphthalenesulfonic acid, 4-hydroxy-6-(phenylamino)-, coupled with diazotized 2-methyl-5-nitrobenzenesulfonic acid-p-phenylenediamine reaction products, sodium salts
CAS No.	91671-98-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Acid Black 210; Acid Black 210; Sodium 4-hydroxy-6-(phenylamino)-2-naphthalenesulfonate coupled diazo component; Diazotized 2-methyl-5-nitrobenzenesulfonic acid-p-phenylenediamine coupled with 4-hydroxy-6-(phenylamino)-2-naphthalenesulfonic acid, sodium salt; Azo dye intermediate derived from 2-naphthalenesulfonic acid; 4-Hydroxy-6-(phenylamino)-2-naphthalenesulfonic acid, coupled with diazotized 2-methyl-5-nitrobenzenesulfonic acid-p-phenylenediamine, sodium salts
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance. All materials are tested against rigorous in-house specifications. A Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with every shipment to guarantee compliance with your formulation requirements.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Heavy Metals (as Pb)	Max. 20 ppm
Solubility	Soluble in water

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