Description

2H-Naphtho[1,2-D]Triazole-5-Sulfonic Acid,2-[4-[2-(4-Amino-2-Sulfophenyl)Ethenyl]-3-Sulfophenyl]-,Trisodium Salt is a high-purity, water-soluble anionic dye intermediate of significant commercial importance. This compound is valued for its strong chromophoric properties and ability to form stable, brilliant colors when incorporated into polymeric matrices. It is primarily required by manufacturers in the synthetic fibers, plastics, and specialty coatings industries seeking to produce high-performance, colorfast materials.

Application

• Synthetic Fiber Dyeing: As a key intermediate for producing cationic-dyeable polyester (CDP) and polyamide fibers, imparting deep, vibrant shades with excellent wash and light fastness.
• Plastics and Masterbatch Coloring: For the coloration of engineering plastics, including polycarbonate (PC), acrylonitrile butadiene styrene (ABS), and polystyrene (PS), where thermal stability is critical.
• Functional Dye Synthesis: Serves as a precursor in the manufacture of fluorescent whitening agents (FWAs) and optical brighteners for paper, textiles, and detergents.
• Liquid Crystal Display (LCD) Color Filters: Used in the formulation of high-purity pigments and dyes for color filters in display technologies, requiring exceptional purity and consistency.
• Inkjet Inks: As a colorant component in high-performance pigment-based inks, offering superior color strength and stability.
• Research & Development: Employed in academic and industrial R&D for developing novel photonic materials, sensors, and organic semiconductors.

Basic Information

Product Name	2H-Naphtho[1,2-D]Triazole-5-Sulfonic Acid,2-[4-[2-(4-Amino-2-Sulfophenyl)Ethenyl]-3-Sulfophenyl]-,Trisodium Salt
CAS No.	40301-09-5
Molecular Formula	C24H15N4Na3O9S3
Molecular Weight	700.53 g/mol
Synonyms	Acid Blue 324; C.I. 61545; Trisodium 2-[4-[2-(4-amino-2-sulfonatophenyl)ethenyl]-3-sulfonatophenyl]-2H-naphtho[1,2-d]triazole-5-sulfonate; 2H-Naphtho[1,2-d]triazole-5-sulfonic acid, 2-[4-[2-(4-amino-2-sulfophenyl)ethenyl]-3-sulfophenyl]-, trisodium salt; Reactive Blue 324 intermediate; Anionic blue dye intermediate; 40301-09-5; 2-[4-[2-(4-Amino-2-sulfophenyl)vinyl]-3-sulfophenyl]-2H-naphtho[1,2-d][1,2,3]triazole-5-sulfonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and reliability. Every lot is analyzed against stringent in-house specifications using advanced analytical techniques, including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1% w/v
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	25.0% - 30.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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