Description

Disodium 5-[[4'-[[4-[[Diamino[[3-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]Phenyl]Azo]Sulphonato-1-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate CAS NO 33363-87-0 is a high-purity, complex azo dye intermediate with a distinctive polyazo structure. This compound is valued for its ability to impart deep, stable coloration and its role as a critical precursor in the synthesis of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries who require consistent, high-performance colorants for demanding applications.

Application

• Textile Dyeing: As a key intermediate for producing high-grade, wash-fast azo dyes for synthetic fibers like polyester and nylon.
• Ink Manufacturing: Used in the synthesis of pigments for industrial inks, including packaging and textile printing inks, where color strength and stability are paramount.
• Specialty Coatings: Serves as a precursor for pigments used in automotive, industrial, and decorative coatings requiring excellent weatherability.
• Plastics and Polymers: Employed in the coloration of engineering plastics and masterbatches, providing consistent hue and thermal stability during processing.
• Research & Development: Utilized in academic and industrial R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Leather Finishing: An intermediate for dyes used in the leather industry to achieve vibrant and durable colors.

Basic Information

Item	Details
Product Name	Disodium 5-[[4'-[[4-[[Diamino[[3-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]Phenyl]Azo]Sulphonato-1-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	33363-87-0
Molecular Formula	C52H34N12Na2O8S
Molecular Weight	1000.93 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 5-[(4'-[(4-[(7-amino-1-hydroxy-3-sulphonato-8-[(4-sulphophenyl)azo]naphthalen-2-yl)azo][1,1'-biphenyl]-4-yl)azo]salicylate); Salicylic acid, 5-[[4'-[[4-[[7-amino-8-[(4-sulfophenyl)azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo][1,1'-biphenyl]-4-yl]azo]-; Azo Black 210; Direct Black 210 (related class); Tetrasodium 5-[(4'-[(4-[(7-amino-1-hydroxy-3,6-disulphonato-8-[(4-sulphophenyl)azo]naphthalen-2-yl)azo][1,1'-biphenyl]-4-yl)azo]salicylate) (alternate salt form)
EINECS	Contact for details

Quality Control

Our Disodium 5-[[4'-[[4-[[Diamino[[3-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]Phenyl]Azo]Sulphonato-1-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent strength, and precise color value. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical specifications are provided and available upon request to support your quality assurance protocols.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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