Description

Sodium 4-[[Diamino(Naphthylazo)Phenyl]Azo]Naphthalene-1-Sulphonate is a high-purity, synthetic azo dye intermediate known for its distinct chromophoric structure. This compound matters for its role in producing vivid, stable colorants and as a critical reagent in specialized analytical chemistry applications. It is primarily needed by manufacturers in the dyes and pigments, textile processing, and research chemical sectors seeking reliable, high-quality intermediates for their synthesis processes.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textiles and inks.
• Key reagent in the production of colorants for specialty papers and coatings.
• Used in analytical chemistry as a chromogenic agent for detection and quantification methods.
• Potential application in the formulation of biological stains and histological dyes for laboratory use.
• Research and development of novel functional dyes with specific light-absorption properties.
• Manufacturing of indicator dyes for chemical and pH testing.

Basic Information

Product Name	Sodium 4-[[Diamino(Naphthylazo)Phenyl]Azo]Naphthalene-1-Sulphonate
CAS No.	12262-06-5
Molecular Formula	C26H18N6Na2O3S
Molecular Weight	564.51 g/mol
Synonyms	Acid Black 131; C.I. 15711; Sodium 1-Naphthalenesulfonate, 4-[[2-(4-diaminophenyl)diazenyl]-1-naphthalenyl]diazenyl]-; 4-[[Diamino(naphthylazo)phenyl]azo]naphthalene-1-sulphonic acid, disodium salt; 1-Naphthalenesulfonic acid, 4-[[2-(4-aminophenyl)diazenyl]-1-naphthalenyl]diazenyl]-, disodium salt; Direct Black 131; Azo Dye Intermediate 12262-06-5
EINECS	Contact for details

Quality Control

Our Sodium 4-[[Diamino(Naphthylazo)Phenyl]Azo]Naphthalene-1-Sulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided to guarantee traceability and quality assurance for your B2B applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water

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