Description

Sodium 2-[(4,5-Diamino-1-Naphthyl)Azo]-5-Nitrobenzenesulphonate is a specialized azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color properties and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants. Consistent quality and reliable supply are critical for ensuring the performance of the final dyestuff products.

Application

• Primary Intermediate for the synthesis of complex azo dyes and pigments.
• Textile Dyeing, particularly for fibers requiring dyes with high color fastness and intensity.
• Ink Formulation for specialty printing inks, including inks for packaging and security applications.
• Research & Development of novel colorants and functional dyes in academic and industrial laboratories.
• Specialty Chemical Synthesis as a building block for advanced materials and photochemicals.

Basic Information

Product Name	Sodium 2-[(4,5-Diamino-1-Naphthyl)Azo]-5-Nitrobenzenesulphonate
CAS No.	93892-20-7
Molecular Formula	C16H11N5NaO5S
Molecular Weight	400.35 g/mol
Synonyms	2-[(4,5-Diamino-1-naphthyl)azo]-5-nitrobenzenesulfonic acid sodium salt; 1-Naphthalenesulfonic acid, 4,5-diamino-6-[(2-nitro-5-sulfophenyl)azo]-, sodium salt; Sodium 4,5-diamino-6-[(2-nitro-5-sulfophenyl)azo]-1-naphthalenesulfonate; Azo dye intermediate 93892-20-7; 5-Nitro-2-[(4,5-diamino-1-naphthyl)azo]benzenesulfonate sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 2-[(4,5-Diamino-1-Naphthyl)Azo]-5-Nitrobenzenesulphonate is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous internal specifications, including identity confirmation, assay, and impurity profiling. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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