Description

Naphthol As-Lc CAS NO 4273-92-1 is a specialized naphthol derivative widely used as a key coupling component in the synthesis of high-performance azo pigments and dyes. Its precise chemical structure is critical for producing vivid, lightfast colors with excellent thermal and chemical stability. This intermediate is essential for manufacturers in the pigments, dyes, and specialty chemical industries seeking to enhance the quality and durability of their colorant products.

Application

• Primary coupling component for the synthesis of high-performance azo pigments.
• Manufacture of organic pigments for plastics, inks, and coatings requiring excellent lightfastness and weather resistance.
• Production of specialized dyes for synthetic fibers, including polyesters and nylons.
• Key intermediate in the development of colorants for masterbatch and high-temperature polymer applications.
• Used in research and development of novel functional dyes for non-textile applications.

Basic Information

Product Name	Naphthol As-Lc
CAS No.	4273-92-1
Molecular Formula	C₁₈H₁₃NO₂
Molecular Weight	275.30 g/mol
Synonyms	3-Hydroxy-2-naphthanilide; Naphthol AS-LC; C.I. Azoic Coupling Component 10; Naphthol AS-L3G; Naphthol AS-L3G; 2-Hydroxy-3-naphthoic acid anilide; 2-Naphthol-3-carboxylic acid anilide; Anilide of 3-hydroxy-2-naphthoic acid
EINECS	224-264-0

Quality Control

Our Naphthol As-Lc is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes comprehensive analytical testing, including HPLC for assay and purity, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment and is available upon request.

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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	210 - 215 °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.