Description

5-Chloro-1-Hydroxynaphthalene is a versatile naphthalene derivative that serves as a critical intermediate in advanced organic synthesis. Its unique structure, featuring both chloro and hydroxyl substituents, makes it a valuable building block for creating complex molecules with specific functionalities. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop new active ingredients and high-performance materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with naphthalene-based structures.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the chloronaphthol moiety imparts specific biological activity.
• Dye and Pigment Manufacturing: Serves as a fundamental intermediate for creating azo dyes, pigments, and other colorants for textiles, plastics, and inks.
• Organic Light-Emitting Diodes (OLEDs): Investigated as a building block for electron-transport materials or host materials in OLED displays and lighting.
• Liquid Crystal Compounds: Used in the research and development of liquid crystal materials for display technologies.
• Chemical Research & Development: Employed in academic and industrial labs for methodological studies, catalysis research, and the development of novel organic compounds.
• Polymer Additives: Can be utilized to synthesize UV stabilizers, antioxidants, or other functional additives for polymer systems.
• Complex Ligand Synthesis: Acts as a starting material for creating chelating ligands used in coordination chemistry and catalysis.

Basic Information

Item	Detail
Product Name	5-Chloro-1-Hydroxynaphthalene
CAS No.	20816-76-6
Molecular Formula	C10H7ClO
Molecular Weight	178.62 g/mol
Synonyms	5-Chloro-1-naphthol; 1-Hydroxy-5-chloronaphthalene; 5-Chloronaphthalen-1-ol; 5-Chloro-α-naphthol; NSC 403107; 5-Chloro-1-naphthalenol
EINECS	Contact for details

Quality Control

Every batch of 5-Chloro-1-Hydroxynaphthalene is produced under a strict quality management system. We employ advanced analytical techniques including HPLC, GC, and NMR to ensure high purity and consistent batch-to-batch quality. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment 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 heat, sparks, and open flame. The compound is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light beige crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	125 - 130 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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