Description

2,7-Naphthalenedisulfonic acid, 5-4-chloro-6-2-4-chloro-6-7-4-(ethenylsulfonyl)phenylazo-8-hydroxy-3,6-disulfo-1-naphthalenylamino-1,3,5-triazin-2-ylaminoethyl(2-hydroxyethyl)amino-1,3,5-triazin-2-ylamino-3-4-(ethenylsulfonyl)phenylazo-4-hydroxy-, sodium is a high-performance, reactive dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple sulfonic acid groups, azo linkages, and reactive vinyl sulfone moieties, is engineered to deliver exceptional color fastness and covalent bonding to substrates. This compound is primarily utilized in the synthesis of advanced textile dyes, where its properties are critical for achieving vibrant, wash-resistant coloration. Industrial buyers rely on this chemical for its role in producing durable and high-quality colorants for demanding applications.

Application

• Primary application in the synthesis of reactive dyes for cellulose fibers like cotton, viscose, and linen.
• Used as a key intermediate for producing high-washfastness textile dyes and pigments.
• Employed in the manufacturing of dyes for leather coloring processes.
• Potential use in the formulation of specialized inks for jet printing or other technical applications.
• Can serve as a research chemical for developing new chromophoric systems and functional dyes.
• Applied in the coloration of paper and other specialty materials requiring covalent bond formation.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 5-4-chloro-6-2-4-chloro-6-7-4-(ethenylsulfonyl)phenylazo-8-hydroxy-3,6-disulfo-1-naphthalenylamino-1,3,5-triazin-2-ylaminoethyl(2-hydroxyethyl)amino-1,3,5-triazin-2-ylamino-3-4-(ethenylsulfonyl)phenylazo-4-hydroxy-, sodium
CAS No.	171599-85-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sodium 5-[[4-chloro-6-[[2-[[4-chloro-6-[[7-[[4-(ethenylsulfonyl)phenyl]azo]-8-hydroxy-3,6-disulfo-1-naphthyl]amino]-1,3,5-triazin-2-yl]amino]ethyl](2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-3-[[4-(ethenylsulfonyl)phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonate; Reactive Dye Intermediate (based on VS/Cl heterobifunctional structure); C.I. Reactive Black 5 related intermediate; Polyazo reactive dye intermediate; Vinyl sulfone reactive dye precursor; Heterobifunctional reactive dye chemical; Bis(vinylsulfone) chlorotriazine dye intermediate.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through analytical methods including HPLC for purity and assay, spectrophotometry for strength, and titration for functional group analysis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, impurity profile, and physical specifications is provided with each shipment. We are committed to meeting the specific requirements of the dye manufacturing industry.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture which can affect product performance and stability. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (or as per customer grade requirement)
Moisture Content	Max. 5.0%
Solubility	Soluble in water
Heavy Metals	Contact for details

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