2-naphthol

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

noun Chemistry.

beta-naphthol. See under naphthol.

Words nearby 2-naphthol

1984, 2,3-diphosphoglycerate, 2,4-d, 2,5-dimethoxy-4-methylamphetamine, 2,6-dichlorobenzonitrile, 2-naphthol, 2-phenoxyethanol, 2.0, 21-hydroxyprogesterone, 24/7, 25-hydroxycholecalciferol

Definition for 2-naphthol (2 of 2)

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

noun Chemistry.

either of two isomeric hydroxyl derivatives, C10H7OH, 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.
Also called hydroxynaphthalene.

Origin of naphthol

First recorded in 1840–50; naphth- + -ol1

British Dictionary definitions for 2-naphthol

naphthol
/ (ˈnæfθɒl, ˈnæp-) /

noun

a white crystalline solid having two isomeric forms, alpha-naphthol, used in dyes, and beta-naphthol, used in dyes and as an antioxidant. Formula: C 10 H 7 OH

Word Origin for naphthol

C19: from naphtha + -ol 1

Medical definitions for 2-naphthol

naphthol
[ năf′thôl′, -thōl′, năp′- ]

n.

An organic compound occurring in two isomeric forms, alpha-naphthol and beta-naphthol. naphthalenol

Scientific definitions for 2-naphthol

naphthol
[ năf′thôl′, -thōl′, năp′- ]

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.