Description

2-Naphthalenesulfonic Acid, 7,7-6-(3-Aminopropyl)Amino-1,3,5-Triazine-2,4-Diyldiiminobis4-Hydroxy-3-(4-Methoxy-2-Sulfophenyl)Azo-, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate and functional chemical. This compound is valued for its ability to impart color and specific functional properties in advanced material formulations. It is primarily sought by manufacturers in the textile, specialty ink, and polymer industries for creating vibrant, stable hues and modifying surface characteristics.

Application

• Textile Dyeing: As a key intermediate for synthesizing reactive and direct dyes for cotton, wool, and synthetic fibers.
• Specialty Inks: Used in the formulation of high-performance inks for packaging, security printing, and digital applications.
• Functional Polymer Additive: Imparts color and can act as a functional moiety in the synthesis of colored engineering plastics and resins.
• Paper Coloring: Employed in the production of high-grade colored papers and decorative laminates.
• Leather Finishing: Used in dyes and finishes for leather goods to achieve deep, uniform colors.
• Research & Development: Serves as a building block in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	2-Naphthalenesulfonic Acid, 7,7-6-(3-Aminopropyl)Amino-1,3,5-Triazine-2,4-Diyldiiminobis4-Hydroxy-3-(4-Methoxy-2-Sulfophenyl)Azo-, Potassium Sodium Salt
CAS No.	156769-97-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 31; Potassium sodium 7,7'-[6-[(3-aminopropyl)amino]-1,3,5-triazine-2,4-diyl]diimino]bis[4-hydroxy-3-[(4-methoxy-2-sulfophenyl)azo]-2-naphthalenesulfonate]; Reactive Black 31; Azo dye intermediate based on naphthalene and triazine; 7,7'-[6-[(3-Aminopropyl)amino]-1,3,5-triazine-2,4-diyl]diimino]bis[4-hydroxy-3-[(4-methoxy-2-sulfophenyl)azo]-2-naphthalenesulfonic acid potassium sodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and performance. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark powder or granules
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.