Description

Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-6-[(2-Methyl-4-Sulphonatophenyl)Azo]-7-Sulphonato-2-Naphthyl]Amino]Carbonyl]Amino]-3-(Phenylazo)Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vivid and stable coloration, making it a critical component in the synthesis of advanced dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable performance in their formulations.

Application

• Textile Dyeing: As a key intermediate for producing reactive and direct dyes for cotton, wool, and nylon fibers.
• Ink Manufacturing: Used in the synthesis of pigments for high-quality printing inks, including inks for packaging and publications.
• Industrial Coatings: Serves as a precursor for colorants in paints, lacquers, and other surface coating applications.
• Leather Processing: Employed in the production of dyes for coloring leather goods.
• Paper Coloring: Utilized in the manufacture of dyes for specialty and decorative papers.
• Plastic Masterbatch: Acts as an intermediate for colorants used in coloring plastics and polymers.

Basic Information

Product Name	Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-6-[(2-Methyl-4-Sulphonatophenyl)Azo]-7-Sulphonato-2-Naphthyl]Amino]Carbonyl]Amino]-3-(Phenylazo)Naphthalene-2-Sulphonate
CAS No.	84045-67-0
Molecular Formula	C34H21N6Na3O13S3
Molecular Weight	894.72 g/mol
Synonyms	Reactive Black 5 (Tetrasodium Salt precursor); C.I. 20505; Trisodium 4-hydroxy-3-(phenylazo)-7-[[[5-hydroxy-6-[(2-methyl-4-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-2-naphthalenesulfonate; Reactive Dye Intermediate; Azo Dye Intermediate CAS 84045-67-0; 4-Hydroxy-3-(phenylazo)-7-[[[5-hydroxy-6-[(2-methyl-4-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-2-naphthalenesulfonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 4-Hydroxy-7-[[[[5-Hydroxy-6-[(2-Methyl-4-Sulphonatophenyl)Azo]-7-Sulphonato-2-Naphthyl]Amino]Carbonyl]Amino]-3-(Phenylazo)Naphthalene-2-Sulphonate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. The material is tested against established in-house specifications, which typically include parameters for assay (HPLC), impurity profile, and solubility. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

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). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept sealed when not in use to prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Solubility	Freely soluble
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm

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