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Naphthol

Alpha-Naphthol is used for the dyes mordant black and brown.

Chemical Formula: C₁₀H₈O

Other names: alpha-Naphthol, 1-hydroxynaphthalene

Layman's explanation: Naphthol takes the form of yellow or colorless monoclinic prisms with a phenolic odor and a disagreeable, burning taste. It is used for the dyes mordant black and brown. It is also utilized in the manufacture of agrochemicals (insecticides), drugs, rubber antioxidants and dye intermediates. Naphthol may be released in the environment during its production, transport, storage, disposal and use in the production of agrochemicals, drugs, rubber antioxidants, and dye intermediates but biodegrades fast. Naphthol is very soluble in ethanol and ether, and is soluble in acetone. Naphthol and its isomer (2-hydroxynaphthalene) are prepared by reacting naphthalene with sulfuric acid and hydrolyzing the resultant sulfate ester by heating it with sodium hydroxide solution. Both naphthols exhibit antiseptic properties and are found in coal tar or made synthetically.

Keywords: insecticides, dyes, drugs

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