naphthol Chem.
(ˈnæfθɒl)
[f. naphth-a + -ol.]
One of two phenols of naphthalene, distinguished as α (or alpha) naphthol and β (or beta) naphthol; the latter is employed in the cure of skin-diseases and for other medical purposes. Also attrib.
| 1849 [see naphthene]. 1857 Miller Elem. Chem., Org. 581. 1869 Roscoe Elem. Chem. 422 On heating the aqueous solution of this body, a substance called naphthol, analogous to phenol is formed. 1881 Athenæum 10 Dec. 782/3 The action of cold sulphuric acid on β naphthol. 1899 Allbutt's Syst. Med. VIII. 611 A slight friction..with a 5 per cent naphthol ointment. |