Description

3-Hydroxy-4-[(2-Methoxy-4-Nitrophenyl)Azo]-2-Naphthoic Acid is a specialized azo dye intermediate, recognized for its distinct molecular structure that imparts valuable chromophoric properties. This compound is essential for synthesizing high-performance pigments and dyes, offering excellent color strength and stability. It is primarily required by manufacturers in the pigments, dyes, inks, and specialty coatings industries seeking to develop products with specific hue and performance characteristics.

Application

• Primary intermediate for the synthesis of high-performance azo pigments and dyes.
• Used in the manufacturing of colorants for industrial inks, including printing and packaging applications.
• Key component in producing pigments for plastics and synthetic fibers to achieve vibrant, lightfast colors.
• Employed in the formulation of specialty coatings and paints requiring specific chromatic properties.
• Potential use in the research and development of functional dyes for non-textile applications.
• Serves as a chemical standard or reference material in analytical and quality control laboratories.

Basic Information

Product Name	3-Hydroxy-4-[(2-Methoxy-4-Nitrophenyl)Azo]-2-Naphthoic Acid
CAS No.	70714-70-4
Molecular Formula	C18H13N3O6
Molecular Weight	367.31 g/mol
Synonyms	4-[(2-Methoxy-4-nitrophenyl)azo]-3-hydroxy-2-naphthoic Acid; C.I. Pigment Red 188; PR 188; 3-Hydroxy-4-[(2-methoxy-4-nitrophenyl)azo]-2-naphthalenecarboxylic Acid; 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(2-methoxy-4-nitrophenyl)azo]-; C.I. 12467; Pigment Red 188; Azo Dye Intermediate 70714-70-4
EINECS	Contact for details

Quality Control

Our production of 3-Hydroxy-4-[(2-Methoxy-4-Nitrophenyl)Azo]-2-Naphthoic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and related substances are provided with each shipment to support your quality assurance processes.

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 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	Reddish-brown to dark 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.