Description

1-[(5-Chloro-2-Hydroxy-4-Nitrophenyl)Azo]-2-Naphthalenol is a specialized azo dye intermediate known for its distinct chromophoric properties. This compound is valued for its ability to impart specific color characteristics and its role in synthesizing complex dye molecules. It is primarily required by manufacturers in the pigments, dyes, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance organic pigments and dyes, particularly for applications requiring specific shades of red, orange, or brown.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good fastness properties.
• Ink Formulation: Employed in the manufacture of industrial and specialty printing inks, including those for plastics and coatings.
• Plastics and Polymer Coloring: Acts as a colorant precursor for masterbatches used in coloring various plastic polymers.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.
• Specialty Coatings: Finds application in the formulation of colored coatings for industrial and decorative purposes.

Basic Information

Item	Details
Product Name	1-[(5-Chloro-2-Hydroxy-4-Nitrophenyl)Azo]-2-Naphthalenol
CAS No.	2749-57-7
Molecular Formula	C₁₆H₁₀ClN₃O₄
Molecular Weight	343.72 g/mol
Synonyms	5-Chloro-2-hydroxy-4-nitrobenzeneazo-2-naphthol; C.I. Pigment Red 2; 1-[(5-Chloro-2-hydroxy-4-nitrophenyl)azo]-2-naphthol; 2-Naphthalenol, 1-[(5-chloro-2-hydroxy-4-nitrophenyl)azo]-; C.I. 12310; Permanent Red FRR; Permanent Red F4RH; Pigment Red 2 (C.I.)
EINECS	220-406-4

Quality Control

Our production of 1-[(5-Chloro-2-Hydroxy-4-Nitrophenyl)Azo]-2-Naphthalenol adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and tests for residual solvents and heavy metals. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your technical requirements.

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 powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline solutions and certain organic solvents

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