Description

Naphtanilide El CAS NO 137-52-0 is a high-purity chemical intermediate belonging to the class of naphthylamine derivatives. This compound is valued for its role as a versatile coupling component in the synthesis of azo dyes and pigments, providing excellent color fastness and hue properties. It is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable and consistent raw materials for their production processes.

Application

• Azo Dye Synthesis: Primary use as a diazo component for producing vibrant and stable orange, red, and brown azo dyes.
• Textile Pigments: Key intermediate in manufacturing pigments for dyeing natural and synthetic fibers.
• Ink Formulation: Used in the production of colorants for printing inks, including packaging and publication inks.
• Organic Synthesis: Serves as a building block for more complex organic molecules in pharmaceutical and agrochemical research.
• Laboratory Reagent: Employed as a standard or reagent in analytical chemistry and quality control laboratories.

Basic Information

Product Name	Naphtanilide El CAS NO 137-52-0
CAS No.	137-52-0
Molecular Formula	C16H13NO
Molecular Weight	235.28 g/mol
Synonyms	Naphthanilide EL; C.I. Azoic Coupling Component 6; 2-Hydroxy-3-naphthoic acid anilide; 3-Hydroxy-2-naphthanilide; N-(3-Hydroxy-2-naphthoyl)aniline; Naphthol AS-EL; Azoic Coupling Component 6; Naphthol EL
EINECS	205-305-5

Quality Control

Our Naphtanilide El is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and identification by FT-IR spectroscopy. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to verify compliance with customer specifications.

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). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.5%
Melting Point	243 - 247 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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