Description

3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulfo-2-Naphtyl)Azo]-6-Sulfo-1-Naphtyl]Azo]-1-Naphtyl]Azo]-1,5-Naphthalenedisulfonic Acid is a high-purity, polyazo naphthalene derivative with multiple sulfonic acid groups, making it a highly functionalized organic intermediate. This compound matters for its role as a critical precursor in the synthesis of specialized dyes and pigments, offering excellent chromophore properties and water solubility. Industrial manufacturers and R&D laboratories in the colorant, textile, and specialty chemical sectors require this material for developing advanced, high-performance products.

Application

• Dye and Pigment Synthesis: Primary use as a key intermediate for manufacturing high-value azo dyes, particularly for textiles, leather, and paper.
• Functional Colorants: Production of specialized pigments for inks, coatings, and plastics where specific color fastness and solubility are required.
• Research & Development: Serves as a building block in organic synthesis for novel chromophores and photoactive materials in academic and industrial R&D.
• Analytical Reagents: Potential use in the formulation of chemical indicators and stains for analytical or diagnostic purposes.
• Textile Processing Auxiliaries: Can be utilized in the development of dye-fixing agents or other functional textile chemicals.

Basic Information

Product Name	3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulfo-2-Naphtyl)Azo]-6-Sulfo-1-Naphtyl]Azo]-1-Naphtyl]Azo]-1,5-Naphthalenedisulfonic Acid
CAS No.	25255-02-1
Molecular Formula	C40H26N8O13S4
Molecular Weight	986.93 g/mol
Synonyms	Acid Black 210; C.I. 300310; 1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-6-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-; 3-[[4-[[4-[(6-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-6-sulfo-1-naphthyl]azo]-1-naphthyl]azo]-1,5-naphthalenedisulfonic acid; Black 210; Polyazo dye intermediate; Tetrakisazo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulfo-2-Naphtyl)Azo]-6-Sulfo-1-Naphtyl]Azo]-1-Naphtyl]Azo]-1,5-Naphthalenedisulfonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance, meeting the specifications required for industrial synthesis. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided to guarantee supply chain transparency and reliability.

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 acids and organic solvents. Due to its complex polyazo structure, prolonged exposure to elevated temperatures or direct light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (Water)	Soluble

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