Description

1,3,6-Naphthalenetrisulfonic acid, 7-2-(aminocarbonyl)amino-4-4-4-2-4-3-(aminocarbonyl)amino-4-(3,6,8-trisulfo-2-naphthalenyl)azophenylamino-6-chloro-1,3,5-triazin-2-ylaminoethyl-1-piperazinyl-6-chloro-1,3,5-triazin-2-ylaminophenylazo-, lithium potassium is a high-purity, water-soluble reactive dye intermediate and specialty chemical. Its complex polyfunctional structure, featuring multiple sulfonic acid groups and reactive chlorotriazine moieties, makes it a critical precursor for synthesizing advanced colorants and functional polymers. This compound is essential for manufacturers in the textile, ink, and specialty materials industries seeking to produce high-performance dyes with excellent wash-fastness and specific chromatic properties.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-grade, fiber-reactive dyes for cotton, wool, and nylon, valued for brilliant shades and superior wet-fastness.
• Functional Polymer Production: Used as a monomer or cross-linking agent to introduce sulfonic acid groups and chromophores into polymers for ion-exchange resins or specialty coatings.
• Inkjet Ink Formulation: Key component in the production of high-quality, water-based pigment and dye inks, ensuring color stability and nozzle compatibility.
• Paper Coloring: Employed in the manufacture of dyes for high-brightness paper and specialty packaging materials.
• Leather Dyeing: Used in formulations for dyeing leather, providing deep, uniform, and durable coloration.
• Analytical Chemistry: May serve as a complexometric agent or a chromogenic substrate in specific analytical and diagnostic applications.
• Research & Development: Serves as a building block in organic synthesis and materials science research for novel chromophoric systems.

Basic Information

Item	Details
Product Name	1,3,6-Naphthalenetrisulfonic acid, 7-2-(aminocarbonyl)amino-4-4-4-2-4-3-(aminocarbonyl)amino-4-(3,6,8-trisulfo-2-naphthalenyl)azophenylamino-6-chloro-1,3,5-triazin-2-ylaminoethyl-1-piperazinyl-6-chloro-1,3,5-triazin-2-ylaminophenylazo-, lithium potassium
CAS No.	202667-43-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 31; Lithium potassium salt of Reactive Black 31; Reactive Black 31, Li/K salt; Polyfunctional azo reactive dye intermediate; Trisulfonated naphthalene-based reactive dye; Chlorotriazine dye precursor; 7-[2-[[4-[4-[2-[4-[3-(Aminocarbonyl)amino-4-[(3,6,8-trisulfo-2-naphthyl)azo]phenylamino]-6-chloro-1,3,5-triazin-2-yl]amino]ethyl-1-piperazinyl]-6-chloro-1,3,5-triazin-2-yl]amino]phenyl]azo]-1,3,6-naphthalenetrisulfonic acid lithium potassium salt
EINECS	Contact for details

Quality Control

Our production of this specialty dye intermediate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Every lot is characterized using advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration to confirm critical parameters such as active content, impurity profile, and ionic composition. Comprehensive Certificates of Analysis (COA) documenting purity, strength, and physical specifications are provided to support your quality assurance and regulatory 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); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture. Store away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (by area)
Water Content	Max. 5.0%
Solubility (in Water)	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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