Description

Trisodium 4-Hydroxy-5-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-3-[[4-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-2-Sulphonatophenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate characterized by its complex poly-sulphonated structure. This compound matters for its role as a critical precursor in the synthesis of specialized, high-value dyes and pigments, offering excellent chromophore properties and solubility. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, stable colors with enhanced performance characteristics.

Application

• Textile Dyeing: As a key intermediate for producing reactive and direct dyes for cotton, wool, and nylon, providing bright and wash-fast colors.
• Ink Manufacturing: Used in the synthesis of pigments for high-quality printing inks, including inks for packaging and security applications.
• Industrial Coatings: Serves as a precursor for colorants in paints, lacquers, and other surface coatings requiring specific hue and stability.
• Paper Coloration: Employed in the production of dyes for specialty paper products where color consistency and brightness are critical.
• Leather Processing: Used in the formulation of dyes for leather finishing, offering good penetration and color fastness.
• Research & Development: Acts as a valuable building block in chemical research for developing new functional dyes and chromogenic materials.

Basic Information

Product Name	Trisodium 4-Hydroxy-5-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-3-[[4-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-2-Sulphonatophenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	94249-17-9
Molecular Formula	C38H27N5Na3O16S5
Molecular Weight	1084.04 g/mol (approx.)
Synonyms	Reactive Black 5 Precursor; Trisodium 4-hydroxy-5-[(3-(phenylsulfonyl)propanoyl)amino]-3-[(4-[(3-(phenylsulfonyl)propanoyl)amino]-2-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate; C.I. Reactive Black 5 Intermediate; Polyazo Dye Intermediate; 94249-17-9; Azo Dye Sulfonate Salt; Naphthalene Disulfonate Azo Dye
EINECS	Contact for details

Quality Control

Our Trisodium 4-Hydroxy-5-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-3-[[4-[[1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-2-Sulphonatophenyl]Azo]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided to guarantee it meets your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
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.