Description

8-Anilino-5-[[4-[(5-Sulpho-1-Naphthyl)Azo]-1-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid, Ammonium Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex polyazo structure is engineered to deliver superior color strength and stability in demanding applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, durable colors.

Application

• Textile Dyeing: Primary application as a key intermediate for synthesizing high-performance, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments for printing inks, including packaging, security, and textile printing inks, valued for its color intensity.
• Specialty Coatings: Serves as a colorant precursor in industrial and automotive coatings where lightfastness and chemical resistance are critical.
• Paper Coloring: Employed in the manufacture of dyes for high-quality paper and cardboard products.
• Leather Finishing: Utilized in dye formulations for leather goods, providing deep, uniform coloration.
• Biological Staining: Potential use as a specialized stain or indicator in histology and microscopy due to its chromophoric properties.
• Research & Development: Serves as a critical building block in chemical R&D for developing novel chromophores and functional dyes.

Basic Information

Item	Details
Product Name	8-Anilino-5-[[4-[(5-Sulpho-1-Naphthyl)Azo]-1-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid, Ammonium Sodium Salt
CAS No.	83006-74-0
Molecular Formula	C36H26N5O7S2 · xNa · yNH4
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 300310; 8-Anilino-5-((4-((5-sulfo-1-naphthyl)azo)-1-naphthyl)azo)naphthalene-1-sulfonic acid, ammonium sodium salt; Ammonium sodium 8-anilino-5-((4-((5-sulfo-1-naphthalenyl)azo)-1-naphthalenyl)azo)naphthalene-1-sulfonate; Polyazo Black Intermediate; Azo Dye Intermediate Black 210; CAS 83006-74-0
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques like HPLC to verify the primary component assay and impurity profile. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and physical specifications is provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Primary Component)
Moisture Content	≤ 5.0% (Karl Fischer)
Water Solubility	Freely soluble
Ash Content	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm

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