- α -naphthol
- 1- Hydroxynaphthalene
Colorless crystals with weak odor phenolartigem
1.28 g · cm -3
96 ° C
288 ° C.
9.30 (25 ° C)
0.1 g · l -1 ( 20 ° C)
Template: Infobox chemical / molecular formula search available
1-naphthol (including α -naphthol ) is an organic chemical compound. The structure consists of a naphthalene with an added hydroxyl group ( -OH). It can therefore also be described as one - Hydroxynaphthalene. There is an isomer, the 2- naphthol ( β -naphthol, 2- Hydroxynaphthalene ).
Under the action of a strong acid, such as concentrated sulfuric acid, 5 - hydroxymethyl furfural formed from pentoses and hexoses by intramolecular dehydration and furfural. This condensed with 1 -naphthol to form a violet dye ( Molisch test ).