Description

Trisodium 7-[[4-Chloro-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble anionic dye belonging to the reactive azo dye class, known for its excellent color strength and stability. This compound is engineered to deliver superior wash and light fastness, making it a critical component for demanding coloration processes. It is primarily required by manufacturers in the textile, leather, and paper industries seeking vibrant and durable hues.

Application

• Reactive Dye for Cellulosic Fibers: Primary application for dyeing cotton, viscose, rayon, and other natural cellulosic materials.
• Leather Coloration: Used for imparting deep, uniform shades to finished leather goods with good fastness properties.
• Paper Dyeing: Suitable for coloring high-quality papers, including specialty and packaging grades.
• Ink Formulation: A key pigment component in the manufacture of certain industrial and specialty inks.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific chromophoric structure.
• Research & Development: Serves as a chemical intermediate or reference standard in synthetic organic chemistry and dye research.

Basic Information

Product Name	Trisodium 7-[[4-Chloro-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	23532-29-8
Molecular Formula	C26H15ClN7Na3O10S3
Molecular Weight	802.06 g/mol
Synonyms	Reactive Black 5; C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Procion Black H-EXL; Drimarene Black K-2B; Levafix Black EB; Triazo Black; 7-[[4-Chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]naphthalene-2-sulfonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 7-[[4-Chloro-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Every lot is tested against industry-standard specifications for purity, color value, and impurity profiles. Certificates of Analysis (COA) detailing all critical parameters are provided to guarantee compliance with your technical requirements.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Black to dark blue powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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