Description

Pentasodium 3,3'-[(2,4,6-trimethyl-5-sulphonato-1,3-phenylene)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino[2-(acetylamino)-4,1-phenylene]azo]]bisnaphthalene-1,5-disulphonate is a high-performance, reactive dye intermediate and functional colorant known for its complex polyazo and triazine-based structure. This compound matters for its ability to form strong covalent bonds with substrates, particularly cellulosic fibers, resulting in excellent wash and light fastness properties. It is primarily needed by manufacturers in the textile, specialty ink, and advanced material coating industries seeking durable and vibrant coloration solutions.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in cotton, viscose, and other cellulose fiber dyeing and printing.
• Textile Coloration: Imparts bright, durable shades with superior fastness to washing, light, and rubbing in textile finishing processes.
• Functional Pigments: Used in the production of pigments for specialty inks, including inks for digital textile printing and security applications.
• Paper Coloring: Employed in the coloration of high-quality papers where color stability is required.
• Leather Dyeing: Provides deep, even coloration for leather goods with good penetration and fastness.
• Research & Development: Serves as a valuable building block in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	Pentasodium 3,3'-[(2,4,6-trimethyl-5-sulphonato-1,3-phenylene)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino[2-(acetylamino)-4,1-phenylene]azo]]bisnaphthalene-1,5-disulphonate
CAS No.	73398-38-6
Molecular Formula	C58H36Cl2N16Na5O19S5
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (related precursor); C.I. Reactive Black 5 intermediate; Pentasodium 1,5-Naphthalenedisulfonate derivative; Triazine-based polyazo dye; Bis(azo) triazine compound; 3,3'-(1,3,5-Triazine-2,4-diylbis(imino(2-acetamido-5-azobenzene-4,1-diyl)azo))bis(1,5-naphthalenedisulfonic acid) pentasodium salt; Reactive dye intermediate 73398-38-6
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive analytical methods including HPLC, UV-Vis spectroscopy, and titration to confirm chemical identity, purity, and reactive group content. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to support your quality assurance and regulatory needs.

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 reactivity and handling properties. Keep away from incompatible materials.

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	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
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.