Description

1,5-Naphthalenedisulfonic acid, 2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo-, reaction products with 2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo-1,4-benzenedisulfonic acid, 1,2-propanediamine and 2,4,6-trifluoro-1,3,5-triazine, sodium salts is a high-performance, water-soluble reactive dye intermediate synthesized from complex azo and triazine chemistry. This compound is engineered to provide excellent color strength, wash-fastness, and covalent bonding properties to substrates, making it a critical component for demanding coloration processes. It is primarily required by manufacturers in the textile, leather, and specialty paper industries seeking durable and vibrant hues.

Application

• Reactive Dye Synthesis: A key intermediate for producing high-grade reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Printing and Dyeing: Imparts bright, wash-fast colors with excellent stability to light and perspiration.
• Leather Coloration: Used in dyeing leather goods where deep penetration and colorfastness are required.
• Paper Dyeing: Suitable for coloring specialty papers, including security and decorative papers.
• Ink Formulation: Can be utilized in the formulation of certain types of industrial inks requiring specific chromatic properties.
• Research & Development: Serves as a building block in chemical research for developing new chromophores and functional dyes.

Basic Information

Item	Details
Product Name	1,5-Naphthalenedisulfonic acid, 2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo-, reaction products with 2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo-1,4-benzenedisulfonic acid, 1,2-propanediamine and 2,4,6-trifluoro-1,3,5-triazine, sodium salts
CAS No.	181531-24-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 181531-24-8; Sodium salts of azo-triazine dye complex; C.I. Reactive Dye Precursor; Polyazo dye intermediate; Triazine-based reactive dye intermediate; Sulfonated azo dye intermediate; 1,2-Propanediamine, reaction products with trifluorotriazine and disulfonated azo compounds
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Every lot is tested against stringent in-house specifications for critical parameters such as purity, color value, and reactive group content. Certificates of Analysis (COA) documenting these results are provided with each shipment to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (or as per grade)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
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.