Description

Sodium 3-[[4-Acetamidophenyl]Azo]-6-Amino-4-Hydroxynaphthalene-2-Sulphonate is a high-purity azo dye intermediate essential for producing vibrant and stable colorants. This compound matters for its role as a key precursor in the synthesis of specialized dyes and pigments, offering excellent coupling properties and color fastness. It is primarily needed by manufacturers in the textile, leather, ink, and specialty chemical industries seeking reliable intermediates for high-performance color applications.

Application

• Primary intermediate for the synthesis of acid dyes and direct dyes used in textile and leather coloring.
• Key precursor in the production of pigments for inks, coatings, and plastics.
• Used in the manufacture of specialized colorants for paper and packaging materials.
• Employed in research and development for novel functional dyes and biological stains.
• Potential use as a colorant or intermediate in the production of security inks and specialty markers.

Basic Information

Product Name	Sodium 3-[[4-Acetamidophenyl]Azo]-6-Amino-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67893-46-3
Molecular Formula	C18H14N4NaO5S
Molecular Weight	421.38 g/mol
Synonyms	6-Amino-4-hydroxy-3-((4-(acetylamino)phenyl)azo)-2-naphthalenesulfonic acid sodium salt; C.I. 18065; Acid Orange 156; Sodium 6-amino-4-hydroxy-3-((4-(acetylamino)phenyl)azo)-2-naphthalenesulfonate; 3-((4-Acetamidophenyl)azo)-6-amino-4-hydroxy-2-naphthalenesulfonic acid sodium salt; Azo dye intermediate 67893-46-3; 4-Acetamidoazobenzene-2-sulfonic acid derivative
EINECS	Contact for details

Quality Control

Our Sodium 3-[[4-Acetamidophenyl]Azo]-6-Amino-4-Hydroxynaphthalene-2-Sulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications for consistent performance in dye synthesis. Certificates of Analysis (COA) documenting 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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
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.