Description

Benzoic acid, 2-[[2-amino-5-hydroxy-6-[ [4'-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-3,3'-dimethoxy [1,1'-biphenyl]-4-yl]azo]-7-sulfo-1-naphthaleny l]azo]-5-nitro-, disodium salt is a complex, high-purity azo dye intermediate of significant industrial importance. This compound is valued for its precise molecular structure, which is critical for imparting specific color and performance characteristics in advanced dye synthesis. It is primarily sought after by manufacturers in the specialty chemicals, textile dyeing, and advanced materials sectors who require consistent, high-quality intermediates for producing vibrant and stable colorants.

Application

This specialized azo dye intermediate serves as a key building block in the synthesis of high-performance dyes and pigments. Its primary applications include:

• Synthesis of Reactive Dyes: For coloring cotton, wool, and other cellulosic fibers with excellent wash-fastness.
• Production of Acid Dyes: Used in the dyeing of silk, nylon, and wool, providing bright and level shades.
• Manufacture of Direct Dyes: For applications requiring straightforward dyeing processes on paper and textiles.
• Specialty Pigment Precursor: In the formulation of high-grade pigments for inks, coatings, and plastics.
• Research & Development: Serving as a critical standard or starting material in chemical research for novel chromophores.
• Functional Dye Intermediate: For dyes used in non-textile applications such as lasers, optical data storage, and sensors.

Basic Information

Product Name	Benzoic acid, 2-[[2-amino-5-hydroxy-6-[ [4'-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-3,3'-dimethoxy [1,1'-biphenyl]-4-yl]azo]-7-sulfo-1-naphthaleny l]azo]-5-nitro-, disodium salt
CAS No.	101200-51-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 238; Disodium 5-[(7-sulfo-4-[(4'-[2-hydroxy-6-sulphonato-1-naphthyl)azo]-3,3'-dimethoxybiphenyl-4-yl)azo]-8-amino-1-hydroxy-3,6-disulphonato-2-naphthyl)azo]-2-nitrobenzoate; Benzoic acid, 5-[[8-amino-1-hydroxy-3,6-disulfo-7-[[4'-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo][3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-2-naphthalenyl]azo]-2-nitro-, disodium salt; Reactive Red 238; Azo dye intermediate 101200-51-5.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing to ensure chemical identity, purity, and consistency meet the exacting standards required for sensitive dye synthesis. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and color strength 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 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 stability and performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (Water)	Partially soluble
Heavy Metals (as Pb)	Max. 20 ppm
Sulfated Ash	Contact for details

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