Description

4-[(4-Chloro-2-Nitrophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid is a specialized azo dye intermediate known for its distinct chromophoric structure, which is critical for producing vivid and stable colorants. This compound matters for its role as a key precursor in the synthesis of high-performance pigments and dyes, offering excellent lightfastness and thermal stability. It is primarily needed by manufacturers in the pigments, dyes, inks, and specialty coatings industries seeking to develop products with specific color properties and durability.

Application

• Pigment Manufacturing: A crucial intermediate for synthesizing high-performance organic pigments, particularly azo pigments known for their color strength and stability.
• Dye Production: Used in the creation of specialized dyes for textiles, plastics, and other polymeric materials requiring specific color shades.
• Ink Formulation: Serves as a colorant precursor in the production of industrial and printing inks, contributing to color vibrancy and resistance.
• Specialty Coatings: Employed in the development of coatings for automotive, industrial, and decorative applications where color permanence is essential.
• Research & Development: Used in chemical research as a model compound for studying azo coupling reactions and chromophore properties.
• Functional Materials: Potential applications in the development of materials for optical sensors or non-linear optics due to its specific molecular structure.

Basic Information

Product Name	4-[(4-Chloro-2-Nitrophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid
CAS No.	72011-11-1
Molecular Formula	C17H10ClN3O5
Molecular Weight	371.73 g/mol
Synonyms	3-Hydroxy-4-[(4-chloro-2-nitrophenyl)azo]-2-naphthoic acid; C.I. Pigment Red 188; 4-[(4-Chloro-2-nitrophenyl)azo]-3-hydroxy-2-naphthalenecarboxylic acid; 2-Naphthalenecarboxylic acid, 4-[(4-chloro-2-nitrophenyl)azo]-3-hydroxy-; 4-(4-Chloro-2-nitrophenylazo)-3-hydroxy-2-naphthoic acid; 4-(4'-Chloro-2'-nitrophenylazo)-3-hydroxy-2-naphthoic acid; Pigment Red 188
EINECS	Contact for details

Quality Control

Our production of 4-[(4-Chloro-2-Nitrophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality system is designed to meet the exacting standards of the pigment and specialty chemical industries.

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 incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, containers should be opaque or stored in darkness to prevent degradation.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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