Description

1-Hydroxy-4-(4-Methoxyphenylazo)-2-Naphthoic Acid is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which is critical for producing consistent colorants and functioning as a specialized reagent in laboratory settings. It is primarily required by manufacturers in the dye and pigment industry, as well as by research and quality control laboratories for analytical applications.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of specific orange to red shades for textiles, inks, and plastics.
• Analytical Chemistry Reagent: Used as a chromogenic agent or complexometric indicator in various laboratory testing procedures.
• Research & Development: Employed in chemical research for developing new colorants, functional materials, or studying azo compound chemistry.
• Specialty Chemical Synthesis: Acts as a precursor for more complex molecules in pharmaceutical or advanced material research.
• Quality Control Standard: Utilized as a reference standard to ensure the purity and consistency of dye batches in manufacturing.

Basic Information

Product Name	1-Hydroxy-4-(4-Methoxyphenylazo)-2-Naphthoic Acid
CAS No.	23614-84-8
Molecular Formula	C18H14N2O4
Molecular Weight	322.32 g/mol
Synonyms	4-(4-Methoxyphenylazo)-1-hydroxy-2-naphthoic acid; C.I. 15865; 1-Hydroxy-2-naphthoic acid, 4-[(4-methoxyphenyl)azo]-; 1-Hydroxy-4-(p-methoxyphenylazo)-2-naphthoic acid; 4-[(4-Methoxyphenyl)azo]-1-hydroxy-2-naphthoic acid; 1-Hydroxy-4-[(4-methoxyphenyl)azo]-2-naphthoic acid; Acid Orange 33 (related color index); Azo dye intermediate OA
EINECS	Contact for details

Quality Control

Our 1-Hydroxy-4-(4-Methoxyphenylazo)-2-Naphthoic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise purity and compositional specifications. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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.

Specification

Item	Specification
Appearance	Orange to red powder or crystals
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.