Description

Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-7-Sulfonato-6-[(o-Tolyl)Azo]-2-Naphthyl]Amino]Carbonyl]Amino]-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments, particularly for demanding applications requiring specific color properties and stability. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Textile Dye Manufacturing: Used in the production of dyes for wool, silk, and nylon, offering good wash and light fastness.
• Inkjet Ink Formulations: Serves as a precursor for pigments and dyes used in high-performance digital printing inks.
• Specialty Pigment Synthesis: Employed in creating complex organic pigments for plastics, paints, and coatings.
• Laboratory & Research: Used as a standard or intermediate in chemical research focused on dye chemistry and chromophore development.
• Paper Coloring: Potential use in the manufacture of dyes for specialty paper products.

Basic Information

Product Name	Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-7-Sulfonato-6-[(o-Tolyl)Azo]-2-Naphthyl]Amino]Carbonyl]Amino]-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate
CAS No.	6460-01-1
Molecular Formula	C44H26N6Na3O16S4
Molecular Weight	1108.93 g/mol (approx.)
Synonyms	Reactive Black 5 Intermediate; Trisodium 4-hydroxy-7-({[(5-hydroxy-7-sulfo-6-[(2-methylphenyl)diazenyl]-2-naphthyl)amino]carbonyl}amino)-3-[(6-sulfo-2-naphthyl)diazenyl]-2-naphthalenesulfonate; C.I. Reactive Black 5, hydrolysate; 4-Hydroxy-7-[[[[5-hydroxy-7-sulfo-6-[(2-methylphenyl)azo]-2-naphthyl]amino]carbonyl]amino]-3-[(6-sulfo-2-naphthyl)azo]-2-naphthalenesulfonic acid trisodium salt; Reactive Black 5 related substance; Azo dye intermediate CAS 6460-01-1
EINECS	Contact for details

Quality Control

Our Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-7-Sulfonato-6-[(o-Tolyl)Azo]-2-Naphthyl]Amino]Carbonyl]Amino]-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial synthesis. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and solubility.

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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

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

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