Description

Pentasodium 2-[[8-Amino-1-Hydroxy-3,6-Disulphonato-7-[[3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble azo dye intermediate characterized by its multiple sulfonate groups, which impart excellent solubility and substantivity. This compound is engineered to deliver exceptional color strength, brightness, and wash-fastness in demanding dyeing applications. It is a critical precursor for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance, vivid dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, viscose, and other cellulosic fiber dyeing.
• Textile Industry: Used in the production of dyes for textiles requiring brilliant shades and excellent wet fastness properties.
• Leather Coloring: Employed in the formulation of dyes for leather finishing, providing deep, uniform coloration.
• Paper Dyeing: Suitable for the coloration of specialty papers where color consistency and stability are paramount.
• Ink Manufacturing: A component in the synthesis of pigments for inks, including those used in packaging and security printing.
• Research & Development: Serves as a standard or experimental compound in R&D labs for developing new colorants and studying dye chemistry.

Basic Information

Product Name	Pentasodium 2-[[8-Amino-1-Hydroxy-3,6-Disulphonato-7-[[3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	84000-68-0
Molecular Formula	C34H21N5Na5O22S6
Molecular Weight	~1247.0 g/mol
Synonyms	Reactive Black 5 Precursor; C.I. Reactive Black 5 Intermediate; Pentasodium 8-Amino-1-hydroxy-3,6-disulphonato-7-[[3-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]azo]-2-naphthylazo]naphthalene-1,5-disulphonate; Azo Dye Intermediate 84000-68-0; 2-Naphthalenesulfonic acid, 8-amino-1-hydroxy-3,6-disulfo-7-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, coupled with diazotized 8-amino-1-hydroxy-3,6-disulfonaphthalene-2-azo-7-naphthalenesulfonic acid, pentasodium salt
EINECS	Contact for details

Quality Control

Our production of Pentasodium 2-[[8-Amino-1-Hydroxy-3,6-Disulphonato-7-[[3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specification parameters are provided and available upon request.

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 product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	7.0 - 9.0

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