Description

3-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-7-Sulpho-1-Naphthyl]Azo]-7-Sulpho-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble anionic dye intermediate belonging to the reactive dye class. Its complex polyazo structure, featuring multiple sulphonic acid groups and a reactive chlorotriazine moiety, provides exceptional color strength and binding affinity for cellulosic fibers. This compound is essential for manufacturers requiring consistent, high-performance intermediates for producing vibrant, wash-fast reactive dyes and pigments. It is primarily utilized in the textile, leather, and specialty ink industries where superior colorfastness and process reliability are critical.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, viscose, and other cellulosic fiber dyeing and printing.
• Textile Industry: Imparts excellent wash, light, and perspiration fastness to dyed fabrics, meeting stringent quality standards for apparel and home textiles.
• Leather Coloring: Used in the formulation of dyes for leather finishing, providing deep, uniform shades with good adhesion.
• Specialty Ink Production: Serves as a colorant intermediate in the manufacture of inks for jet printing and other specialized applications.
• Research & Development: A valuable chemical for R&D laboratories developing new dye molecules, color formulations, and studying azo dye chemistry.
• Paper Coloring (Specialty Grades): Potential use in the production of dyes for high-grade paper products where specific color properties are required.

Basic Information

Item	Details
Product Name	3-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-7-Sulpho-1-Naphthyl]Azo]-7-Sulpho-1-Naphthyl]Azo]Naphthalene-1,5-Disulphonic Acid, Potassium Sodium Salt
CAS No.	85586-78-3
Molecular Formula	C34H19ClKN10NaO14S4 (or related salt form)
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 85586-78-3; C.I. Reactive Black 5 Intermediate; Polyazo Dye Intermediate; Potassium Sodium Salt of Azo Dye Acid; 1,5-Naphthalenedisulfonic Acid derivative; Chlorotriazinyl Azo Dye Intermediate; Amino Chloro Triazine Azo Dye; Sulfonated Polyazo Compound
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to a strict quality management system to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and isomer content, spectrophotometry for strength, and tests for residual solvents and inorganic salts. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment. We support compliance with relevant global standards for industrial chemicals, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed immediately after use to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture (KF)	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0
Ash Content	Contact for details

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