Description

Benzenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl)amino]-6-methoxy-1,3,5-triazin-2-yl]amino]-2-[2-[4-[[4-methoxy-6-[(2-sulfoethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]-, trisodium salt is a high-performance, water-soluble anionic dye belonging to the reactive dye class, specifically engineered for demanding coloration applications. Its complex molecular structure, featuring multiple sulfonate groups and reactive triazine moieties, provides exceptional substantivity, brilliant color yield, and excellent fastness properties. This product is essential for manufacturers in the textile and specialty chemical industries seeking reliable and vibrant dyes for high-quality fabric production and other advanced material applications.

Application

• Primary Textile Dyeing: Used extensively for dyeing cellulosic fibers like cotton, viscose, and linen, offering excellent wash and light fastness.
• Reactive Dye Formulations: Serves as a key component in the production of liquid or powder reactive dye formulations for industrial use.
• Leather Coloration: Applied in the dyeing of leather goods where deep, penetrating, and durable color is required.
• Paper and Pulp Coloring: Utilized for tinting high-grade papers and specialty pulps, providing uniform coloration.
• Inkjet Ink Production: A potential component in the formulation of specialty inks for digital textile printing due to its solubility and color properties.
• Research & Development: Used in chemical research as a model compound or intermediate for developing new chromophores and functional dyes.

Basic Information

Item	Detail
Product Name	Benzenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl)amino]-6-methoxy-1,3,5-triazin-2-yl]amino]-2-[2-[4-[[4-methoxy-6-[(2-sulfoethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]-, trisodium salt
CAS No.	86271-35-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (common commercial name); C.I. Reactive Black 5; Trisodium 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylazo)-2,7-naphthalenedisulfonate (alternative IUPAC); Remazol Black B; Levafix Black E-B; Procion Black H-EXL; Sumifix Black B; Dianix Black BG-FS
EINECS	Contact for details

Quality Control

Our production of Reactive Black 5 adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile to meet the high standards required for industrial dyeing processes. Certificates of Analysis (COA) documenting purity, assay, and specific physical-chemical properties are available upon request for quality assurance and regulatory compliance.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and flow characteristics.

Specification

Item	Specification
Appearance	Black to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 90%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 100 g/L (at 25°C)
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.