Description

Tetrasodium 4-amino-6-[[5-[[4-[(3-chlorophenyl)amino]-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]azo]-5-hydroxy-3-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate is a high-purity, water-soluble reactive dye intermediate of significant commercial importance. Its complex polyazo structure, featuring multiple sulphonate groups and a reactive triazine moiety, provides exceptional color strength and binding affinity for cellulosic fibers. This compound is essential for manufacturers requiring consistent, high-performance dyes for textiles, inks, and specialty coatings. Its reliable synthesis and quality are critical for producing vibrant, wash-fast colors in demanding industrial applications.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-grade reactive dyes used in cotton, viscose, and other cellulosic fiber dyeing and printing.
• Textile Industry: Enables the production of dyes with excellent wash-fastness, light-fastness, and brilliant shades for the apparel and home furnishing sectors.
• Ink Manufacturing: Used in formulating specialty inks, including inks for digital textile printing, where color purity and stability are paramount.
• Leather Coloring: Serves as an intermediate for dyes applied in the leather tanning and finishing industry.
• Paper Dyeing: Employed in the synthesis of dyes for high-quality paper and packaging materials.
• Research & Development: A vital chemical for R&D laboratories focusing on novel chromophores, dye chemistry, and material science.

Basic Information

Item	Details
Product Name	Tetrasodium 4-amino-6-[[5-[[4-[(3-chlorophenyl)amino]-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]azo]-5-hydroxy-3-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate
CAS No.	70528-89-1
Molecular Formula	C37H22ClF1N11O14S4Na4
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 70528-89-1; Tetrasodium Salt of C.I. Reactive Black 5 precursor; Polyazo reactive dye intermediate; 1,3,5-Triazine-2,4-diamine derivative; Naphthalenedisulfonic acid, azo-substituted derivative; CAS 70528-89-1; 4-Amino-6-[[5-[[4-[(3-chlorophenyl)amino]-6-fluoro-s-triazin-2-yl]amino]-2-sulfophenyl]azo]-5-hydroxy-3-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analysis, including HPLC for purity and impurity profiling, to meet exacting customer specifications. A detailed Certificate of Analysis (COA) documenting identity, assay, and related substances is provided with each shipment. We support compliance with global supply chain requirements, including REACH registration where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance and stability.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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