Description

Disodium 4-Amino-3-[[4-[5-[(2,4-Diaminophenyl)Azo]-1H-Benzimidazol-2-Yl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, complex azo dye intermediate of significant industrial importance. Its intricate molecular structure, featuring multiple azo and benzimidazole groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, stable colors with specific technical properties.

Application

• Primary Intermediate for High-Performance Dyes: Serves as a key building block in the synthesis of complex, polyazo direct dyes and reactive dyes for textiles, particularly cotton and cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for applications requiring high color strength and stability, such as in inks and coatings.
• Functional Dye Synthesis: A precursor for dyes used in specialized applications, including leather coloring and paper dyeing, where specific lightfastness and washfastness are required.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	Disodium 4-Amino-3-[[4-[5-[(2,4-Diaminophenyl)Azo]-1H-Benzimidazol-2-Yl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	93803-35-1
Molecular Formula	C41H28N12Na2O8S2
Molecular Weight	918.83 g/mol
Synonyms	Direct Black 22 (Intermediate); C.I. 35435; Disodium 4-amino-3-{[4-(5-[(2,4-diaminophenyl)diazenyl]-1H-benzimidazol-2-yl)phenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate; Polyazo Dye Intermediate; Benzimidazole Azo Dye Intermediate; 93803-35-1; Azo Benzimidazole Dye Precursor
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profile is provided with each shipment to support your quality assurance and R&D processes.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 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.