[naf-thawl, -thol, nap-] /ˈnæf θɔl, -θɒl, ˈnæp-/

noun, Chemistry.
either of two isomeric hydroxyl derivatives, C 1 0 H 7 OH, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides.
/ˈnæfθɒl; ˈnæp-/
a white crystalline solid having two isomeric forms, alpha-naphthol, used in dyes, and beta-naphthol, used in dyes and as an antioxidant. Formula: C10H7OH

naphthol naph·thol (nāf’thôl’, -thōl’, nāp’-) or naph·tol (-tôl, -tōl)
An organic compound occurring in two isomeric forms, alpha-naphthol and beta-naphthol. Also called naphthalenol.
(nāf’thôl’, -thōl’, nāp’-)
A poisonous organic compound occurring in two isomeric forms. Both isomers are important in the manufacture of dyes, and also in making antiseptics, insecticides, and tanning agents. Naphthol consists of a hydroxyl group (OH) attached to naphthalene. Chemical formula: C10H8O.


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