Definition

Noun: A specific chemical compound, an isomer of naphthol, used primarily in the manufacture of dyes and other organic chemicals.

Usage

"Alpha-naphthol" is a technical term used in chemistry and industrial manufacturing. It refers to one of two forms (isomers) of naphthol, distinguished by the position of the hydroxyl group on the naphthalene ring structure. Its primary application is as an intermediate in synthesizing dyes, pigments, and some pharmaceuticals.

Examples

• The laboratory synthesized alpha-naphthol for the new batch of azo dyes.
• Alpha-naphthol is often used in chemical tests, such as the Molisch test for carbohydrates.
• The production of certain pigments requires alpha-naphthol as a key starting material.

Advanced Usage

• Chemical Intermediate: In organic synthesis, alpha-naphthol is a precursor for more complex molecules.
• Analytical Reagent: It serves as a reagent in specific qualitative chemical analyses to detect the presence of other compounds.

Variants and Related Words

• Naphthol (noun): The parent name for the compound; alpha-naphthol is 1-naphthol.
• Beta-naphthol (noun): The other isomer, where the hydroxyl group is in a different position (2-naphthol).
• 1-Naphthol (noun): The systematic chemical name for alpha-naphthol.

Synonyms

• 1-Naphthol (This is the precise synonym, as it is the systematic name for the same compound.)
• 1-Hydroxynaphthalene (A less common systematic name.)

Notes on Meaning

This word has a single, specific technical meaning in chemistry. It does not have general, idiomatic, or phrasal verb uses.

Noun

1. an isomer of naphthol used in dyes