2-Naphthol extra pure

2-Naphthol extra pure is a high-purity, laboratory-grade version of 2-naphthol (also called beta-naphthol), widely used in organic synthesis, dye/pigment manufacture, and chemical research.​

Chemical Properties

Chemical name: 2-Naphthol (β-naphthol, Naphthalen-2-ol)

Molecular formula:

C

10

H

8

O

C

10

H

8

O​

CAS Number: 135-19-3​

Molecular weight: 144.17 g/mol​

Physical appearance: White glossy flakes, crystalline solid, or white powder​

Assay (Purity): Minimum 99% (extra pure/AR/LR grade)​

Melting point: 120–122°C​

Solubility: Negligible in water; readily soluble in alcohol, ether, chloroform, benzene, and alkaline solutions.​

Major Uses

Dyes and Pigments: Essential intermediate for manufacturing azo dyes, pigments, and colorants.​

Organic Synthesis: Building block for synthesizing heterocycles (e.g., xanthenes, chromenes, furans), antioxidants, and other organic chemicals.​

Pharmaceuticals: Used to synthesize drugs like tolnaftate, naproxen, and nafcillin.​

Analytical Chemistry: Used as a reagent for chemical testing and in research applications requiring high purity.​

Safety and Handling

Hazards: May cause skin/eye irritation; avoid inhalation of dust.​

Storage: Keep container tightly closed, protected from light and moisture; stable under recommended storage.​

Shelf life: Typical 3–5 years in optimal storage.