Description

2,4-Bis[[2,4-Diamino-5-[(3-Sulphophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid is a high-purity, multi-functional azo dye intermediate of significant commercial importance. Its value lies in its complex molecular structure, which serves as a critical building block for synthesizing specialized dyes and pigments with enhanced color fastness and specific optical properties. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key precursor in the synthesis of high-grade, complex azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics requiring specific shade and stability.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes with targeted properties.
• Analytical Reagent: Can be utilized as a standard or reagent in analytical chemistry for method development and calibration.

Basic Information

Product Name	2,4-Bis[[2,4-Diamino-5-[(3-Sulphophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid
CAS No.	85959-49-5
Molecular Formula	C30H24N12O8S2
Molecular Weight	744.71 g/mol
Synonyms	Benzenesulfonic acid, 2,4-bis[[2,4-diamino-5-[(3-sulfophenyl)azo]phenyl]azo]-; C.I. 37240; Direct Black 166; 2,4-Bis[(2,4-diamino-5-((3-sulfophenyl)azo)phenyl)azo]benzenesulfonic acid; 85959-49-5; Acid Black 166; Azo dye intermediate 85959-49-5
EINECS	Contact for details

Quality Control

Our production of 2,4-Bis[[2,4-Diamino-5-[(3-Sulphophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. A Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
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.