Description

Naphthol As-Gr Purified Grade is a high-purity, light-sensitive azo dye intermediate essential for producing vivid and stable pigments. This compound matters for manufacturers who require consistent color strength and chemical purity to ensure the quality and performance of their final products. It is primarily needed by industries involved in the synthesis of azo dyes and pigments for textiles, inks, and specialty coatings, where precise chemical composition is critical for batch-to-batch reliability.

Application

• Primary Intermediate for Azo Dyes: A key coupling component in the synthesis of a wide range of insoluble azo pigments.
• Textile Dyeing and Printing: Used to manufacture dyes for coloring natural and synthetic fibers, providing excellent fastness properties.
• Ink Manufacturing: Serves as a crucial component in producing high-performance pigments for printing inks, including packaging and publication inks.
• Pigment Production for Plastics and Paints: Imparts durable coloration to plastics, industrial paints, and automotive coatings.
• Research and Development: Employed in chemical research for developing new colorants and studying dye chemistry.
• Specialty Chemical Synthesis: Acts as a building block for more complex organic molecules in fine chemical manufacturing.

Basic Information

Product Name	Naphthol As-Gr Purified Grade
CAS No.	1830-77-9
Molecular Formula	C₁₇H₁₃NO₃
Molecular Weight	279.29 g/mol
Synonyms	Naphthol AS-GR; C.I. Azoic Coupling Component 6; 3-Hydroxy-N-(3-nitrophenyl)-2-naphthamide; 2-Hydroxy-3-naphthoic acid 3-nitroanilide; 2-Naphthalenecarboxamide, 3-hydroxy-N-(3-nitrophenyl)-; Naphthol AS-GR (Purified); 3'-Nitrophenyl-3-hydroxy-2-naphthamide; Azoic Coupling Component 6
EINECS	217-389-9

Quality Control

Our Naphthol As-Gr Purified Grade is manufactured under a stringent quality management system to ensure it meets the exacting standards required for high-performance pigment synthesis. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR spectroscopy. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Light brown to beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	208°C - 212°C
Loss on Drying	≤ 0.5%
Residue on Ignition (Sulfated Ash)	≤ 0.2%
Heavy Metals (as Pb)	≤ 20 ppm

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