Description

3-[[4-[(4-Chloro-2-Sulphophenyl)Azo]-2-Methoxy-6-Sulpho-1-Naphthyl]Azo]-4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure provides excellent chromophoric properties, making 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, colorfast products.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton and cellulose fiber dyeing.
• Textile Colorant Production: Used in the manufacture of dyes for wool, silk, and nylon, offering good wash and light fastness.
• Inkjet Ink Formulations: Serves as a precursor for pigments in professional and industrial inkjet printing inks.
• Specialty Pigments for Coatings: Employed in the synthesis of organic pigments for automotive and industrial coatings.
• Paper Coloring Agent: Intermediate for dyes used in high-grade paper and packaging materials.
• Leather Dye Manufacturing: Used in the production of dyes for the leather tanning and finishing industry.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophores and dye chemistry.

Basic Information

Item	Details
Product Name	3-[[4-[(4-Chloro-2-Sulphophenyl)Azo]-2-Methoxy-6-Sulpho-1-Naphthyl]Azo]-4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	93964-29-5
Molecular Formula	C33H22ClN5O11S3•Na (or corresponding sodium salt form)
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 93964-29-5; Sodium 3-[[4-[(4-chloro-2-sulfophenyl)azo]-2-methoxy-6-sulfo-1-naphthyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulfonate; Polyazo Dye Intermediate; CI Reactive Red Precursor; Azo Dye CAS 93964-29-5; Textile Dye Intermediate; 4-Hydroxy-7-(phenylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-2-methoxy-6-sulfo-1-naphthyl]azo]naphthalene-2-sulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our 3-[[4-[(4-Chloro-2-Sulphophenyl)Azo]-2-Methoxy-6-Sulpho-1-Naphthyl]Azo]-4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonic Acid, Sodium Salt is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye synthesis. Certificates of Analysis (COA) documenting batch-specific results are 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 each use to prevent moisture absorption and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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