Description

2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis5-4-Chloro-6-(2-Methyl-4-Sulfophenyl)Amino-1,3,5-Triazin-2-Ylamino-2-Sulfophenylazo-5-Hydroxy-, Sodium Salt is a high-purity, complex anionic dye intermediate and specialty chemical. This compound is engineered for superior performance in demanding applications where color strength, stability, and specific chemical reactivity are critical. It is primarily required by manufacturers in the textile, ink, and specialty polymer industries for synthesizing advanced dyes and functional colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-grade reactive dyes used in cotton and cellulose fiber dyeing and printing.
• Specialty Ink Formulations: Used in the production of high-performance inks for digital textile printing and security printing applications.
• Functional Colorant Synthesis: Serves as a precursor for creating colorants with specific properties for plastics, coatings, and advanced materials.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: May be employed as a standard or reagent in specific analytical methods for dye identification and quantification.

Basic Information

Item	Detail
Product Name	2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis5-4-Chloro-6-(2-Methyl-4-Sulfophenyl)Amino-1,3,5-Triazin-2-Ylamino-2-Sulfophenylazo-5-Hydroxy-, Sodium Salt
CAS No.	141250-43-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 31; Reactive Black 31; Sodium 4-amino-6-[4-chloro-6-[(2-methyl-4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino-5-hydroxy-3-[[4-[2-[4-chloro-6-[(2-methyl-4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-5-sulfophenyl]azo]-2,7-naphthalenedisulfonate; 4-Amino-6-[4-chloro-6-[(2-methyl-4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino-5-hydroxy-3-[[4-[2-[4-chloro-6-[(2-methyl-4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-5-sulfophenyl]azo]-2,7-naphthalenedisulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of this specialty intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request.

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 sealed to minimize exposure to 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.