Description

5-[[4'-[[8-[(2,4-Diaminophenyl)Azo]-1-Hydroxy-3,6-Disulfo-2-Naphtyl]Azo]-1,1'-Biphenyl-4-Yl]Azo]-2-Hydroxybenzoic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart deep, vibrant colors with excellent light and wash fastness properties. It is primarily sought after by manufacturers in the textile, leather, and specialty ink industries for producing high-quality dyes and pigments.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent color yield and fastness.
• Leather Finishing: Used in the production of dyes for coloring leather goods, providing rich, durable shades.
• Ink Manufacturing: Serves as a precursor for pigments used in specialty printing inks, including inks for packaging and security applications.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper products requiring specific color standards.
• Research & Development: Used as a standard or starting material in chemical research for developing new chromophores and functional dyes.
• Functional Dyes: Potential applications in the synthesis of dyes for non-textile uses, such as in optical data storage or as biological stains.

Basic Information

Product Name	5-[[4'-[[8-[(2,4-Diaminophenyl)Azo]-1-Hydroxy-3,6-Disulfo-2-Naphtyl]Azo]-1,1'-Biphenyl-4-Yl]Azo]-2-Hydroxybenzoic Acid Trisodium Salt
CAS No.	4623-91-0
Molecular Formula	C41H26N8Na3O11S2
Molecular Weight	948.78 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 5-[[4'-[[8-[(2,4-diaminophenyl)azo]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-[1,1'-biphenyl]-4-yl]azo]-2-hydroxybenzoate; Benzoic acid, 5-[[4'-[[8-[(2,4-diaminophenyl)azo]-1-hydroxy-3,6-disulfo-2-naphthyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, trisodium salt; 2-Hydroxy-5-({4'-[(E)-{8-[(E)-(2,4-diaminophenyl)diazenyl]-1-hydroxy-3,6-disulfo-2-naphthyl}diazenyl]-[1,1'-biphenyl]-4-yl}diazenyl)benzoic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Every lot is tested against established specifications, including identity confirmation, assay, and impurity profile analysis. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

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

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