Description

6-Amino-4-Hydroxy-3-[[4-(Sulfomethyl)Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate essential for synthesizing vibrant and stable colorants. Its molecular structure, featuring both amino and sulfonic acid groups, provides excellent reactivity and solubility, making it a critical building block for specialized dyes. This compound is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance pigments and dyes with superior fastness properties.

Application

• Primary Intermediate for Azo Dyes: A key precursor in the synthesis of acid dyes and direct dyes used for coloring nylon, silk, wool, and paper.
• Textile Industry: Used in the manufacturing of dyes for textiles requiring bright shades and good wash-fastness.
• Ink Formulation: Serves as a crucial component in the production of inks for packaging, printing, and writing instruments.
• Leather Coloring: Employed in the formulation of dyes for leather finishing to achieve durable and consistent coloration.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Research & Development: Utilized in chemical research for developing new chromophores and functional dyes with specific optical properties.

Basic Information

Product Name	6-Amino-4-Hydroxy-3-[[4-(Sulfomethyl)Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	6360-14-1
Molecular Formula	C17H13N3O7S2•2Na
Molecular Weight	473.41 g/mol
Synonyms	6-Amino-4-hydroxy-2-naphthalenesulfonic acid, 3-[(4-sulfomethylphenyl)azo]-, disodium salt; C.I. 17205; Acid Yellow 61; Disodium 6-amino-4-hydroxy-3-[(4-sulfomethylphenyl)azo]naphthalene-2-sulfonate; 3-[(4-Carboxymethylphenyl)azo]-4,6-dihydroxynaphthalene-2-sulfonic acid disodium salt (related form); Azo dye intermediate YA
EINECS	228-871-5

Quality Control

Our production of 6-Amino-4-Hydroxy-3-[[4-(Sulfomethyl)Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided and can be tailored to meet specific regulatory or internal quality requirements.

Storage

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

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
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.