|Molecular formula||C 10 H 8 O|
white crystalline powder with a phenolic odor
|External identifiers / databases|
|Molar mass||144.17 g mol −1|
1.22 g cm −3
123 ° C
285 ° C
|pK s value||
9.57 (25 ° C)
sparingly soluble in water: 1 g l −1 (20 ° C)
|As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .|
2-naphthol (also β-naphthol ) is an organic chemical compound. The structure consists of a naphthalene structure with an attached hydroxyl group (-OH). It can therefore also be called 2-hydroxynaphthalene. There is another isomer , 1-naphthol (α-naphthol, 1-hydroxynaphthalene).
2-Naphthol is a crystalline solid that melts at 123 ° C. According to Antoine, the vapor pressure function of the melt results from log 10 (P) = A− (B / (T + C)) (P in kPa, T in K) with A = 3.058, B = 467.4 and C = −257 , 6 in the temperature range from 130 ° C to 160 ° C.
2-Napththol can be converted, for example, with methanol or with ethanol to form the methyl or ethyl ether, 2-methoxynaphthalene or 2-ethoxynaphthalene . These ethers are used as artificial fragrances .
- Zvi Rappoport (Ed.): CRC Handbook of Tables for Organic Compound Identification . 3 rd Edition, CRC Press / Taylor and Francis, Boca Raton, FL, 1967, ISBN 0-8493-0303-6 , Acid Dissociation Constants of Phenols in Aqueous Solution, S. 434th
- Entry on 2-naphthol in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- Toxicological assessment of 2-naphthol (PDF) at the professional association raw materials and chemical industry (BG RCI), accessed on August 20, 2012.
- Gerhard Wendt, B. Vithal Shetty, William F. Bruce: Mercurial Diuretics. I. Addition of Mercuric Chloride and Secondary Amines to Allylamides. In: Journal of the American Chemical Society. 81, 1959, p. 4233, doi : 10.1021 / ja01525a029 .
- F. Barontini, V. Cozzani: thermogravimetric as a screening tool for the estimation of the vapor pressure of pure compounds. In: J. Therm. Anal. Calorim. 89, 2007, pp. 309-314.