Description

Tetrasodium 4-hydroxy-5-[[4-[[[[5-hydroxy-6-[(2-methoxy-5-sulphonatophenyl)azo]-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-5-methoxy-o-tolyl]azo]naphthalene-2,7-disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. It serves as a critical precursor for synthesizing reactive and direct dyes, offering excellent color strength and chromophore stability. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce vibrant and wash-fast colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, wool, and nylon dyeing.
• Direct Dye Production: Used in the manufacture of direct dyes for paper, leather, and cellulosic fiber applications.
• Specialty Ink Formulations: A crucial component in producing colorants for inkjet and other specialty printing inks requiring high solubility and color purity.
• Research & Development: Serves as a standard or starting material in R&D labs for developing novel chromophores and dye systems.
• Biological Staining: Potential use as a precursor for histological stains and diagnostic dyes in life sciences.

Basic Information

Item	Details
Product Name	Tetrasodium 4-hydroxy-5-[[4-[[[[5-hydroxy-6-[(2-methoxy-5-sulphonatophenyl)azo]-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-5-methoxy-o-tolyl]azo]naphthalene-2,7-disulphonate
CAS No.	94135-85-0
Molecular Formula	C43H30N8Na4O19S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 Precursor; Tetrasodium 1-amino-4-[[4-[[4-[(2,4-disulphonatophenyl)azo]-7-sulphonato-1-naphthyl]azo]-5-methoxy-2-methylphenyl]azo]-5-hydroxy-2,7-naphthalenedisulphonate; Azo Dye Intermediate 94135-85-0; C.I. Reactive Black 5 related intermediate; Tetrasodium salt of a disazo dye acid; 5-Hydroxy-6-[(2-methoxy-5-sulphonatophenyl)azo]-7-sulphonato-2-naphthyl carbamoyl derivative
EINECS	Contact for details

Quality Control

Our tetrasodium azo dye intermediate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for dye synthesis. Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are provided with every shipment to guarantee batch-to-batch consistency and performance reliability for your production processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Solubility (in Water)	Freely soluble

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