1-Naphthol extra pure

1-Naphthol extra pure is a high-purity, laboratory-grade form of 1-naphthol (α-naphthol), primarily used in organic synthesis, dye manufacturing, analytical chemistry, and scientific research.​

Chemical Properties

Chemical name: 1-Naphthol (α-naphthol, Naphthalen-1-ol)

Molecular formula:

C

10

H

8

O

C

10

H

8

O

CAS Number: 90-15-3​

Physical appearance: Off-white to brownish flakes or crystalline solid with a slight phenolic odor​

Molecular weight: 144.17 g/mol​

Purity/Assay: Minimum 98% (Extra Pure/LR grade)​

Melting point: 94–96°C​

Solubility and Handling

Solubility: Practically insoluble in water, soluble in alcohol, ether, benzene, chloroform, and alkali solutions.​

Storage: Store in a cool, dry place away from light and moisture; product darkens on exposure to air/light.​

Safety

Hazard statements: Harmful if swallowed or in contact with skin; causes skin/eye irritation; may cause respiratory irritation.​

Symbols: GHS05 (corrosive), GHS07 (irritant)​

Shelf life: 36 months if stored properly​

Major Uses

Precursor in dye and pigment manufacturing, especially azo dyes.​

Analytical chemistry reagent for identifying carbohydrates (Molisch’s test) and biochemical assays.​

Starting material for organic synthesis and pharmaceutical intermediates.​