Description

7-Amino-4-Hydroxy-3-[[4-[(4-Nitro-2-Sulphophenyl)Amino]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, synthetic organic compound belonging to the azo dye intermediate class. This chemical is a critical building block for the production of high-performance dyes and pigments, valued for its specific chromophore structure and functional groups. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to develop vivid and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key precursor in the synthesis of complex, high-value azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings, where lightfastness and color strength are required.
• Specialty Colorant Synthesis: Employed in research and development for creating novel dyes with specific properties for technical applications.
• Laboratory Reagent: Acts as a standard or intermediate in analytical chemistry and chemical research focused on dye chemistry and chromophore studies.

Basic Information

Item	Details
Product Name	7-Amino-4-Hydroxy-3-[[4-[(4-Nitro-2-Sulphophenyl)Amino]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	83006-43-3
Molecular Formula	C22H16N6O9S2Na
Molecular Weight	Approx. 627.52 g/mol
Synonyms	Acid Red 337; C.I. 17200; 7-Amino-4-hydroxy-3-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)-2-naphthalenesulfonic acid, monosodium salt; Sodium 7-amino-4-hydroxy-3-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]naphthalene-2-sulfonate; Azo dye intermediate 83006-43-3; 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)-, monosodium salt
EINECS	Contact for details

Quality Control

Our 7-Amino-4-Hydroxy-3-[[4-[(4-Nitro-2-Sulphophenyl)Amino]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.