Description

Sodium 4-[[4-[(2,4-Diaminophenyl)Azo]Naphthyl]Azo]Naphthalene-1-Sulphonate is a high-purity, water-soluble azo dye intermediate. This compound is valued for its precise chemical structure, which is critical for producing consistent and vibrant colorants. It is primarily required by manufacturers in the textile, leather, and specialty ink industries for synthesizing high-performance dyes and pigments.

Application

• Primary intermediate for the synthesis of direct and acid dyes used in textile dyeing and printing.
• Key precursor in the production of leather dyes, providing deep, uniform coloration.
• Used in the formulation of specialty inks, including those for packaging and security printing applications.
• Employed in the manufacture of paper colorants for high-quality printing and decorative papers.
• Acts as a chemical building block for research and development of novel functional dyes and colorimetric sensors.
• Potential use as a staining agent in selected biological and histological applications.

Basic Information

Product Name	Sodium 4-[[4-[(2,4-Diaminophenyl)Azo]Naphthyl]Azo]Naphthalene-1-Sulphonate
CAS No.	10115-25-0
Molecular Formula	C26H18N6Na2O3S
Molecular Weight	564.50 g/mol
Synonyms	Direct Black 38 (sodium salt); C.I. 30235; Sodium 1-amino-4-[[4-[(2,4-diaminophenyl)azo]-1-naphthyl]azo]-2-phenoxy-; 4-[[4-[(2,4-Diaminophenyl)azo]-1-naphthyl]azo]-1-naphthalenesulfonic acid, disodium salt; Azoamine Black; Pontamine Black E; Benzo Black; Diazol Black 2V
EINECS	233-324-1

Quality Control

Our production of Sodium 4-[[4-[(2,4-Diaminophenyl)Azo]Naphthyl]Azo]Naphthalene-1-Sulphonate adheres to stringent quality management protocols. Every batch is tested to ensure high purity and consistency, with specifications meeting the demands of industrial dye synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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 strong oxidizing agents. Due to its dye nature, handle with care to avoid cross-contamination.

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	≤ 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.