Description

Tetrasodium 2-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Benzene-1,4-Disulphonate is a high-purity, water-soluble anionic dye belonging to the class of reactive azo dyes. This compound is valued for its excellent color fastness, high substantivity, and strong covalent bonding with cellulosic fibers, making it a critical component in demanding coloration processes. It is primarily required by manufacturers in the textile, leather, and specialty paper industries seeking consistent, vibrant, and durable color results.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers, offering excellent wash and light fastness.
• Leather Finishing: Used for coloring leather goods, providing deep, uniform shades with good rub fastness.
• Paper Coloring: Employed in the production of specialty and decorative papers requiring high color value and stability.
• Ink Formulation: Serves as a colorant in certain types of inks for packaging and printing applications.
• Research & Development: Used as a standard or intermediate in chemical research for developing new dyes and pigments.

Basic Information

Product Name	Tetrasodium 2-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Benzene-1,4-Disulphonate
CAS No.	70161-16-9
Molecular Formula	C35H18ClN11Na4O14S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5, Tetrasodium Salt; C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Drimarene Black B; Sumifix Black B; Procion Black H-EXL
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 2-[[4-[[4-[(4-Amino-6-Chloro-1,3,5-Triazin-2-Yl)Amino]-5-Sulphonato-1-Naphthyl]Azo]-7-Sulphonato-1-Naphthyl]Azo]Benzene-1,4-Disulphonate adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure compliance with industry specifications for color strength, purity, and solubility. Certificates of Analysis (COA) detailing key parameters are provided with each shipment to guarantee traceability and performance consistency for our global B2B clients.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
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.