Description

2,7-Naphthalenedisulfonic acid, 4,4-1,4-phenylenebisimino6-4-(2-aminoethyl)-1-piperazinyl-1,3,5-triazine-4,2-diyliminobis5-hydroxy-6-(1-sulfo-2-naphthalenyl)azo-, sodium salt is a sophisticated, high-molecular-weight azo dye intermediate with a complex polyfunctional structure. This compound is engineered to deliver exceptional color strength and binding affinity, making it a critical precursor for advanced colorants. It is primarily utilized by manufacturers in the textile, specialty ink, and high-performance polymer industries seeking to develop products with superior chromatic properties and stability.

Application

• Production of Reactive and Direct Dyes: A key intermediate for synthesizing high-grade dyes for cotton, wool, and polyamide fibers.
• Specialty Ink Formulations: Used in the manufacture of inks for digital textile printing and security printing applications requiring precise color fidelity.
• Functional Polymer Additives: Imparts color and can be incorporated into polymers where its functional groups interact with the matrix.
• Research & Development: Serves as a building block in chemical research for developing novel chromophores and photoactive materials.
• Analytical Chemistry: Potential use as a staining agent or a complexometric indicator due to its chelating azo structure.

Basic Information

Item	Detail
Product Name	2,7-Naphthalenedisulfonic acid, 4,4-1,4-phenylenebisimino6-4-(2-aminoethyl)-1-piperazinyl-1,3,5-triazine-4,2-diyliminobis5-hydroxy-6-(1-sulfo-2-naphthalenyl)azo-, sodium salt
CAS No.	172277-97-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 31 (probable); Polyfunctional azo dye intermediate; Sodium 4,4'-[1,4-phenylenebis[imino[6-[4-(2-aminoethyl)-1-piperazinyl]-1,3,5-triazine-4,2-diylimino[5-hydroxy-6-[(1-sulfo-2-naphthyl)azo]]]]]bis[2,7-naphthalenedisulfonate]; Reactive dye intermediate 172277-97-3; Azo dye precursor with piperazine and triazine groups; Tetrasulfonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through analytical techniques including HPLC for purity and spectrophotometry for color value. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (in Water)	Completely soluble
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.