Description

6-Amino-5-[[4-[2-(4-Amino-2-Sulfophenyl)Ethenyl]-3-Sulfophenyl]Azo]-1,3-Naphthalenedisulfonic Acid is a high-purity, multi-sulfonated azo dye intermediate essential for producing vibrant and wash-fast colorants. Its complex molecular structure, featuring multiple amino and sulfonic acid groups, provides excellent water solubility and strong affinity for various substrates, making it a critical building block for advanced dyes. This compound is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to develop high-performance, environmentally compliant color products.

Application

• Primary Intermediate for Reactive Dyes: A key precursor in the synthesis of high-quality reactive dyes for cotton, wool, and nylon, offering brilliant shades and superior fastness properties.
• Manufacture of Acid Dyes: Used in the production of acid dyes for coloring silk, leather, and paper, providing excellent leveling and brightness.
• Specialty Ink Formulations: Serves as a crucial component in formulating inks for jet printing, security inks, and other high-performance printing applications.
• Liquid Crystal Display (LCD) Color Filters: Employed in the creation of precise colorants for LCD and other display technologies.
• Biological Staining Reagents: Potential use in the development of specialized stains for histological and cytological applications in life sciences.
• Research & Development: A valuable compound for chemical R&D focused on novel chromophores, functional dyes, and advanced materials science.

Basic Information

Product Name	6-Amino-5-[[4-[2-(4-Amino-2-Sulfophenyl)Ethenyl]-3-Sulfophenyl]Azo]-1,3-Naphthalenedisulfonic Acid
CAS No.	71205-48-6
Molecular Formula	C24H19N5O10S4
Molecular Weight	665.66 g/mol
Synonyms	Acid Blue 344; C.I. 61211; 6-Amino-5-{[4-(2-(4-amino-2-sulfophenyl)vinyl)-3-sulfophenyl]diazenyl}naphthalene-1,3-disulfonic acid; 1,3-Naphthalenedisulfonic acid, 6-amino-5-[[4-[2-(4-amino-2-sulfophenyl)ethenyl]-3-sulfophenyl]azo]-; Benzenesulfonic acid, 4,4'-(1,2-ethenediyl)bis[3-amino-, coupled with 6-amino-1,3-naphthalenedisulfonic acid]; Reactive Blue Dye Intermediate
EINECS	Contact for details

Quality Control

Our 6-Amino-5-[[4-[2-(4-Amino-2-Sulfophenyl)Ethenyl]-3-Sulfophenyl]Azo]-1,3-Naphthalenedisulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry specifications for dye intermediates. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided to guarantee batch-to-batch consistency and performance reliability for your synthesis processes.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark blue to purple powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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