Description

2-[[4-[[2,4-Diamino-5-[(2-Hydroxy-5-Sulphophenyl)Azo]Phenyl]Azo]Phenyl]Amino]-5-Nitrobenzenesulphonic Acid is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex molecular structure provides the chromophoric backbone essential for producing vivid and stable colorants. This compound is primarily sought by manufacturers in the textile, ink, and specialty pigment industries who require reliable, consistent-quality intermediates for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical precursor in the synthesis of high-performance azo dyes, particularly for coloring textiles like cotton, wool, and nylon.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics where color fastness and stability are paramount.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Analytical Chemistry: Can be utilized as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	2-[[4-[[2,4-Diamino-5-[(2-Hydroxy-5-Sulphophenyl)Azo]Phenyl]Azo]Phenyl]Amino]-5-Nitrobenzenesulphonic Acid
CAS No.	70660-47-8
Molecular Formula	C24H20N8O8S2
Molecular Weight	612.59 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2-[[4-[[2,4-Diamino-5-[(2-hydroxy-5-sulfophenyl)azo]phenyl]azo]phenyl]amino]-5-nitrobenzenesulfonic acid; Benzenesulfonic acid, 2-[[4-[[2,4-diamino-5-[(2-hydroxy-5-sulfophenyl)azo]phenyl]azo]phenyl]amino]-5-nitro-; 5-Nitro-2-[[4-[[2,4-diamino-5-[(2-hydroxy-5-sulfophenyl)azo]phenyl]azo]phenyl]amino]benzenesulfonic acid
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 high purity. Every lot is analyzed using advanced techniques like HPLC to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment, ensuring full traceability and compliance with customer specifications.

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 oxidizing agents and incompatible materials. The product is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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