Description

8-[[4-(Acetylamino)Phenyl]Azo]-5-Amino-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which is critical for synthesizing dyes and pigments with specific color properties and stability. It is primarily required by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing high-performance colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textiles and inks.
• Key precursor in the production of acid dyes for coloring nylon, silk, and wool fibers.
• Used in the manufacture of reactive dyes for cotton and other cellulosic materials.
• Employed in research and development of specialty colorants for high-tech applications.
• Potential use as a biochemical reagent or staining agent in laboratory settings.
• Intermediate for functional dyes used in non-textile applications such as plastics and coatings.

Basic Information

Product Name	8-[[4-(Acetylamino)Phenyl]Azo]-5-Amino-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	70615-18-8
Molecular Formula	C18H15N4O4SNa
Molecular Weight	406.39 g/mol
Synonyms	5-Amino-8-[(4-acetamidophenyl)azo]-2-naphthalenesulfonic acid sodium salt; C.I. Acid Orange 156; Sodium 5-amino-8-[(4-acetamidophenyl)azo]-2-naphthalenesulfonate; 8-[(4-Acetamidophenyl)azo]-5-amino-2-naphthalenesulfonic acid sodium salt; Azo dye intermediate 70615-18-8; 5-Amino-8-(4-acetamidophenylazo)-2-naphthalenesulfonate sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and performance.

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
Residual Solvents	Meets ICH guidelines

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