Description

Naphthol As-Ol CAS NO 135-62-6 is a specialized organic chemical compound belonging to the naphthol AS series, widely recognized as a key coupling component in the synthesis of azo pigments and dyes. Its primary value lies in its ability to produce vivid, lightfast, and chemically stable colorants essential for high-performance applications. This product is critically needed by manufacturers in the pigments and dyes, plastics, inks, and textile industries seeking to enhance the color quality and durability of their finished products.

Application

• Primary coupling component for the synthesis of high-performance azo pigments and dyes.
• Imparting color to plastics and synthetic resins for automotive parts, consumer goods, and packaging.
• Manufacturing of industrial and decorative inks, including printing inks.
• Dyeing and printing of textiles and fibers to achieve specific color shades.
• Production of paints and coatings requiring excellent tinting strength and weather resistance.
• Potential use as an intermediate in the synthesis of more complex organic compounds for research and development.

Basic Information

Product Name	Naphthol As-Ol
CAS No.	135-62-6
Molecular Formula	C₁₇H₁₃NO₂
Molecular Weight	263.29 g/mol
Synonyms	3-Hydroxy-2-naphthanilide; Naphthol AS-OL; C.I. Azoic Coupling Component 20; Naphthol AS-OL (C.I. 37530); 2-Hydroxy-3-naphthoic acid anilide; 2-Hydroxy-N-phenyl-3-naphthamide; Naphthol AS-OL (Azoic); Anilide of 3-hydroxy-2-naphthoic acid
EINECS	205-210-9

Quality Control

Our Naphthol As-Ol is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. The product undergoes comprehensive analytical testing, including assay by HPLC, identification (IR), and control of key impurities. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with each shipment to guarantee it meets your specific 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 strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	243 - 247 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.3%

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