Description

1,3-Benzenedisulfonic acid, 4-[[5-(aminocarbonyl)-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl]azo]-6-[[4-[3-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-sulfophenyl]-6-chloro-1,3,5-triazin-2-yl]amino]-, trisodium salt is a high-performance, water-soluble reactive dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and reactive chlorotriazine groups, is engineered to provide exceptional color fastness and covalent bonding to cellulosic fibers. This compound is primarily sought by manufacturers in the textile industry for the synthesis of advanced reactive dyes, as well as by producers of specialty pigments and inks. Its design ensures vibrant, wash-resistant coloration, making it a critical component for high-quality fabric production.

Application

• Primary Intermediate for Reactive Dyes: Key starting material for synthesizing high-fastness reactive dyes used in cotton, viscose, and other cellulosic fiber dyeing and printing.
• Textile Colorant Production: Manufacture of dyes offering excellent wash, light, and perspiration fastness for the apparel and home furnishing industries.
• Specialty Pigment Synthesis: Used in creating complex organic pigments for applications requiring high color strength and stability.
• Inkjet Ink Formulations: Component in the production of specialty inks for digital textile printing, providing vibrant and durable colors.
• Research & Development: Serves as a reference standard and building block in chemical R&D for novel chromophores and functional dyes.
• Leather Dyeing: Intermediate for dyes used in the leather processing industry to achieve deep, uniform shades.

Basic Information

Item	Details
Product Name	1,3-Benzenedisulfonic acid, 4-[[5-(aminocarbonyl)-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl]azo]-6-[[4-[3-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-sulfophenyl]-6-chloro-1,3,5-triazin-2-yl]amino]-, trisodium salt
CAS No.	73455-11-5
Molecular Formula	C31H22Cl2N14Na3O14S3
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (key intermediate); Trisodium 4-amino-5-hydroxy-3-[[4-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]phenyl]azo]-6-(phenylamino)-2,7-naphthalenedisulfonate related structure; C.I. Reactive Black 5 precursor; Azo dye intermediate with chlorotriazine groups; Tetrasodium 6-amino-4-hydroxy-3-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthyl]azo]-5-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonate analog; Reactive dye intermediate CAS 73455-11-5; Complex benzenedisulfonic acid azo dye salt
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 comprehensive analytical methods including HPLC for purity, spectrophotometry for strength, and titration for reactive group content. A Certificate of Analysis (COA) detailing identity, purity, impurity profile, and physical specifications is 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, well-ventilated area at a controlled 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 handling.

Specification

Item	Specification
Appearance	Dark powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Reactive Group Content	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm

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