Description

Naphthol As CAS NO 92-77-3 is a high-purity, versatile naphthol derivative widely used as a key intermediate in organic synthesis. Its primary commercial value lies in its role as a coupling component for producing azo pigments and dyes, offering excellent color fastness and hue properties. This product is essential for manufacturers in the pigment, dye, and specialty chemical industries seeking reliable intermediates for high-performance colorants.

Application

• Primary coupling component for the synthesis of high-performance azo pigments and dyes.
• Key intermediate in the production of pigments for plastics, printing inks, and coatings.
• Used in the manufacture of colorants for textile fibers and leather.
• Intermediate in organic synthesis for research and development of novel chemical entities.
• Potential use in the preparation of liquid crystal materials and other advanced functional chemicals.

Basic Information

Product Name	Naphthol As
CAS No.	92-77-3
Molecular Formula	C₁₇H₁₃NO₂
Molecular Weight	263.29 g/mol
Synonyms	3-Hydroxy-2-naphthanilide; Naphthol AS; C.I. Azoic Coupling Component 2; Naphthol Anilide; 2-Hydroxy-3-naphthoic acid anilide; 3-Hydroxy-N-phenyl-2-naphthamide; Azoic Coupling Component 2; Naphthanilide AS
EINECS	202-189-5

Quality Control

Our Naphthol As is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing purity, identity, and physical parameters is provided with each shipment to guarantee compliance with your technical requirements.

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 heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	243 - 246 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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