Description

Disodium 5-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate known for its distinct chromophoric properties. This compound is valued for its role in producing specialized dyes and pigments with excellent color fastness and stability. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for creating vibrant, durable colors.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance azo dyes for textiles and fabrics.
• Specialty Pigment Production: Used in the manufacture of pigments for inks, coatings, and plastics requiring specific color shades.
• Research & Development: Serves as a critical reagent in chemical research for developing new chromophores and functional dyes.
• Analytical Chemistry: Can be utilized as a colorimetric indicator or a complexing agent in specific analytical methods.
• Functional Material Synthesis: Employed in the creation of advanced materials where light-absorbing properties are essential.

Basic Information

Product Name	Disodium 5-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	3769-61-7
Molecular Formula	C₁₆H₉N₅O₁₂S₂Na₂
Molecular Weight	589.38 g/mol
Synonyms	5-Amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulfonic acid disodium salt; C.I. 17200; Acid Brown 14; Disodium 5-amino-4-hydroxy-3-(2-hydroxy-3,5-dinitrophenylazo)naphthalene-2,7-disulphonate; 3-[(2-Hydroxy-3,5-dinitrophenyl)azo]-5-amino-4-hydroxynaphthalene-2,7-disulfonic acid disodium salt; Azo Brown; Dinatrium-5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalin-2,7-disulfonat
EINECS	223-197-5

Quality Control

Our Disodium 5-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2,7-Disulphonate is produced under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request 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). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to reddish-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
Water Solubility	Freely soluble

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