Description

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with resorcinol, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid and diazotized 4-nitrobenzenamine is a complex, high-purity azo dye intermediate. This compound is critical for synthesizing specialized dyes and pigments with excellent color fastness and specific optical properties. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-grade, complex azo dyes for textiles and fibers.
• Specialty Pigment Production: Used in the manufacture of pigments for high-performance inks, including printing and packaging inks.
• Functional Dyes for Coatings: Applied in the formulation of specialized industrial and automotive coatings requiring specific color and durability.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying dye chemistry.
• Paper Coloring: Potential use in the production of dyes for high-quality paper and specialty paper products.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with resorcinol, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid and diazotized 4-nitrobenzenamine
CAS No.	90432-09-0
Molecular Formula	C29H21N7O11S3 (Tentative, contact for confirmation)
Molecular Weight	Contact for details
Synonyms	C.I. Acid Black 210; Acid Black 210; Black 210 (Acid); 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with resorcinol, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid and diazotized 4-nitroaniline; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized, coupled with resorcinol, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid and diazotized 4-nitrobenzenamine; Dye intermediate for Acid Black 210
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity for your synthesis processes. Quality is verified through analytical techniques including HPLC and spectrophotometry. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm

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