2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis[[5-[[4-Chloro- 6-[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl ]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-, Tetrasodium Salt CAS NO 85665-98-1

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CAS No.:85665-98-1

Grade:Pharmacy Grade

Content:99.9%

Brand:Customizable

Packaging:Customizable

Description

2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis[[5-[[4-Chloro- 6-[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl ]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-, Tetrasodium Salt is a high-purity, reactive dye intermediate of significant commercial importance. This compound is valued for its ability to form strong covalent bonds with substrates, particularly cellulosic fibers, resulting in excellent wash and light fastness properties. It is primarily sought after by manufacturers in the textile and specialty chemical industries for the production of high-quality reactive dyes and colorants.

Application

Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in textile dyeing and printing, especially for cotton, viscose, and other cellulosic fibers.
Textile Industry: Enables the production of dyes with brilliant shades, superior color yield, and excellent fastness to washing, light, and perspiration.
Specialty Pigments: Used in the formulation of specialized pigments and colorants for niche applications requiring specific chemical resistance or stability.
Research & Development: Serves as a critical reagent in chemical R&D for developing new chromophores and studying dye-substrate interactions.
Functional Dyes: Potential use in the synthesis of dyes for non-textile applications, such as in paper, leather, or as biological stains, leveraging its reactive triazine groups.

Basic Information

Item	Details
Product Name	2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis[[5-[[4-Chloro- 6-[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl ]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-, Tetrasodium Salt
CAS No.	85665-98-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 5; Reactive Black 5; Tetrasodium 4-amino-5-hydroxy-3,6-bis[[4-[2-(sulfooxy)ethylsulfonyl]-2-sulfophenyl]azo]-2,7-naphthalenedisulfonate; Remazol Black B; Levafix Black E-B; Procion Black H-EXL; Dianix Black BG-FS; Kayacion Black P-N
EINECS	Contact for details

Quality Control

Our production of 2,7-Naphthalenedisulfonic Acid, 4-Amino-3,6-Bis[[5-[[4-Chloro- 6-[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl ]Amino]-2-Sulfophenyl]Azo]-5-Hydroxy-, Tetrasodium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, reactivity, and color strength, meeting the exacting standards required for dye intermediate applications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment.

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 tightly sealed after opening to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0