Description

Tetrasodium 4-Hydroxy-3-[(1-Sulphonato-2-Naphthyl)Azo]-5-[[[[3-[[2-(Sulphonatothio)Ethyl]Sulphonyl]Phenyl]Amino]Carbonyl]Amino]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble reactive dye intermediate and specialty chemical. This compound is valued for its ability to form covalent bonds with substrates, providing excellent color fastness and wash resistance in demanding applications. It is essential for manufacturers in the textile, leather, and specialty polymer industries seeking to produce vibrant, durable colors and functional materials.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Coloration: Used in the production of dyes that offer superior brightness and excellent wet fastness properties in textile printing and dyeing.
• Leather Processing: Employed in the formulation of dyes for leather, providing deep, uniform coloration with good adhesion.
• Functional Polymer Modification: Acts as a chromophore or functional monomer in the synthesis of specialty polymers and coatings.
• Inkjet Ink Formulation: Serves as a colorant component in the production of high-quality, water-based inkjet inks for industrial printing.
• Research & Development: Used as a standard or building block in chemical research for developing new chromogenic materials and analytical reagents.

Basic Information

Product Name	Tetrasodium 4-Hydroxy-3-[(1-Sulphonato-2-Naphthyl)Azo]-5-[[[[3-[[2-(Sulphonatothio)Ethyl]Sulphonyl]Phenyl]Amino]Carbonyl]Amino]Naphthalene-2,7-Disulphonate
CAS No.	94109-43-0
Molecular Formula	C35H24N6Na4O18S5
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 Supra Black B; Tetrasodium 8-[(4-[[4-[(2-sulfonatooxyethyl)sulfonyl]phenyl]carbamoylamino]-2-sulfonatophenyl)azo]-7-hydroxynaphthalene-1,3-disulfonate; 4-Hydroxy-3-[(1-sulphonato-2-naphthyl)azo]-5-[[[[3-[[2-(sulphonatothio)ethyl]sulphonyl]phenyl]amino]carbonyl]amino]naphthalene-2,7-disulphonate tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 4-Hydroxy-3-[(1-Sulphonato-2-Naphthyl)Azo]-5-[[[[3-[[2-(Sulphonatothio)Ethyl]Sulphonyl]Phenyl]Amino]Carbonyl]Amino]Naphthalene-2,7-Disulphonate adheres to stringent quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are provided and available upon request.

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 after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	7.0 - 9.0

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