Description

6-Amino-5-[(4-Aminophenyl)Azo]-4-Hydroxy-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate essential for producing vibrant and stable colorants. This compound matters for its role as a key precursor in synthesizing acid dyes and reactive dyes, offering excellent coupling properties and color yield. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking reliable intermediates for high-performance dye production.

Application

• Primary Intermediate for Acid Dyes: A crucial building block in the synthesis of acid dyes used for coloring nylon, wool, and silk fibers.
• Reactive Dye Synthesis: Used in the manufacture of reactive dyes for cotton and other cellulosic fibers, providing strong covalent bonds for excellent wash-fastness.
• Leather Dyeing: Employed in the production of dyes for high-quality leather finishing, ensuring deep, uniform coloration.
• Paper Coloring: Serves as an intermediate for dyes used in specialty paper and packaging applications.
• Ink Formulation: Used in the creation of pigments for inks, including those for textiles and security printing.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel dye molecules and colorant technology.

Basic Information

Product Name	6-Amino-5-[(4-Aminophenyl)Azo]-4-Hydroxy-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	72269-60-4
Molecular Formula	C16H13N5O4SNa
Molecular Weight	402.36 g/mol
Synonyms	6-Amino-5-[(4-aminophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt; Acid Black 210; C.I. 27710; Sodium 6-amino-5-[(4-aminophenyl)azo]-4-hydroxy-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 6-amino-5-[(4-aminophenyl)azo]-4-hydroxy-, monosodium salt; 5-[(4-Aminophenyl)azo]-6-amino-4-hydroxy-2-naphthalenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our 6-Amino-5-[(4-Aminophenyl)Azo]-4-Hydroxy-2-Naphthalenesulfonic Acid Sodium Salt is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for dye intermediate applications. Certificates of Analysis (COA) documenting all key specifications are 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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to purple powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Complete, clear solution

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