Description

Trisodium 7-[[4-[[4-[[6-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoyl]Amino]-o-Tolyl]Azo]Naphthalene-1,3-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex polyaromatic structure with multiple sulfonate groups makes it a critical precursor for synthesizing high-value, colorfast dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, durable colors with excellent wash and light fastness properties.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-performance reactive dyes for cotton, wool, and nylon fibers.
• Textile Colorant Production: Used to manufacture dyes that offer superior brightness, color strength, and fixation rates on cellulosic materials.
• Inkjet Ink Formulations: Serves as a precursor for pigments used in high-quality digital printing inks, providing excellent color gamut and stability.
• Specialty Pigment Synthesis: Employed in creating complex organic pigments for automotive paints, industrial coatings, and plastics.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying structure-color relationships in dye chemistry.
• Paper Coloring: Intermediate for dyes used in the coloring of specialty papers and packaging materials.

Basic Information

Item	Details
Product Name	Trisodium 7-[[4-[[4-[[6-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoyl]Amino]-o-Tolyl]Azo]Naphthalene-1,3-Disulphonate
CAS No.	6104-56-9
Molecular Formula	C41H25N7Na3O13S3
Molecular Weight	989.82 g/mol
Synonyms	Acid Red 299; Trisodium 4-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]benzoyl]amino]-2-methylphenyl]azo]naphthalene-1,3-disulphonate; C.I. 18129; Reactive Red 180 intermediate; 7-[[4-[[4-[[6-[(4-Aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]benzoyl]amino]-2-methylphenyl]azo]-1,3-naphthalenedisulfonic acid trisodium salt; Azo dye intermediate AR-299; Benzenesulfonic acid, 4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]benzoyl]amino]-2-methyl-, coupled with 7-amino-1,3-naphthalenedisulfonic acid, trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 7-[[4-[[4-[[6-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoyl]Amino]-o-Tolyl]Azo]Naphthalene-1,3-Disulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for sensitive synthesis applications. The product undergoes rigorous analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect purity and handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Moisture Content	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 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.