Description

Sodium p-[(4-Amino-1-Naphthyl)Azo]Benzenesulphonate CAS NO 5399-85-9 is an azo dye intermediate characterized by its distinct chemical structure. This compound is valued for its role as a key precursor in the synthesis of complex dyes and pigments, where it provides chromophoric and functional properties. It is primarily required by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing high-value colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloring.
• Key precursor in manufacturing specialty dyes for inks, coatings, and plastics.
• Used in research and development of novel chromogenic compounds and functional materials.
• Potential intermediate for biological staining agents in laboratory and diagnostic applications.
• Starting material for producing colorants with specific light-fastness and solubility properties.

Basic Information

Product Name	Sodium p-[(4-Amino-1-Naphthyl)Azo]Benzenesulphonate
CAS No.	5399-85-9
Molecular Formula	C16H12N3NaO3S
Molecular Weight	349.34 g/mol
Synonyms	Sodium 4-[(4-Amino-1-naphthyl)azo]benzenesulfonate; 4-[(4-Amino-1-naphthyl)azo]benzenesulfonic Acid Sodium Salt; Benzenesulfonic acid, 4-[(4-amino-1-naphthalenyl)azo]-, sodium salt; Acid Orange 20 (related class); C.I. 14600; Azoic diazo component; 1-Amino-4-(4-sulfophenylazo)naphthalene Sodium Salt
EINECS	226-408-6

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Quality is assured through analytical methods including HPLC, UV-Vis, and titration to verify identity, purity, and composition. Certificates of Analysis (COA) detailing batch-specific results 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). Keep away from incompatible materials. Due to its light-sensitive nature, containers should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Reported on COA
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%

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