Description

4-[(9,10-Dihydro-9,10-Dioxo-1-Anthryl)Azo]-3-Hydroxy-2-Naphthoic Acid is a high-purity, anthraquinone-based azo dye intermediate known for its excellent color properties and stability. This compound is critical for synthesizing high-performance pigments and dyes that require superior lightfastness and chemical resistance. It is primarily sought after by manufacturers in the pigments, specialty dyes, and advanced materials industries for demanding applications.

Application

• High-Performance Pigment Synthesis: A key intermediate for producing anthraquinone-based organic pigments with exceptional durability.
• Specialty Dye Manufacturing: Used in the creation of dyes for plastics, coatings, and inks requiring high color strength and stability.
• Automotive and Industrial Coatings: Imparts vibrant, long-lasting colors that resist fading from UV exposure and harsh chemicals.
• Advanced Material Coloring: Suitable for coloring engineering plastics and high-grade synthetic fibers.
• Research & Development: Serves as a valuable building block in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	4-[(9,10-Dihydro-9,10-Dioxo-1-Anthryl)Azo]-3-Hydroxy-2-Naphthoic Acid
CAS No.	51867-75-5
Molecular Formula	C25H14N2O5
Molecular Weight	422.39 g/mol
Synonyms	1-Aminoanthraquinone-2-carboxylic acid azo derivative; C.I. Pigment Red 177 Intermediate; 3-Hydroxy-4-[(1-anthraquinonyl)azo]-2-naphthoic Acid; Anthraquinone Azo Dye Intermediate; 1-(2-Carboxy-1-hydroxy-3-naphthylazo)anthraquinone; 4-[(1-Anthraquinonyl)azo]-3-hydroxy-2-naphthoic Acid; 51867-75-5
EINECS	Contact for details

Quality Control

Our production of 4-[(9,10-Dihydro-9,10-Dioxo-1-Anthryl)Azo]-3-Hydroxy-2-Naphthoic Acid adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC and spectroscopic methods, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	Dark Red to Brown Powder
Identification (IR)	Conforms to Structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 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.