1-Naphthol

1-Naphthol
IUPAC name Naphthalen-1-ol
Other names 1-Hydroxynaphthalene; 1-Naphthalenol; alpha-Naphthol
Identifiers
CAS number	90-15-3 Y
PubChem	7005
ChemSpider	6739 Y
UNII	2A71EAQ389 Y
KEGG	C11714 Y
ChEBI	CHEBI:10319 Y
ChEMBL	CHEMBL122617 Y
Jmol-3D images	Image 1
SMILES Oc2cccc1ccccc12
InChI InChI=1S/C10H8O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-7,11H Y Key: KJCVRFUGPWSIIH-UHFFFAOYSA-N Y InChI=1/C10H8O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-7,11H Key: KJCVRFUGPWSIIH-UHFFFAOYAZ
Properties
Molecular formula	C10H8O
Molar mass	144.17 g/mol
Appearance	Colorless or white solid; commercial material is often strongly colored
Density	1.10 g/cm3
Melting point	95–96 °C
Boiling point	278–280 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1-Naphthol, or α-naphthol, is a colorless crystalline solid with the formula C₁₀H₇OH. It is an isomer of 2-naphthol differing by the location of the hydroxyl group on naphthalene. The naphthols are naphthalene homologues of phenol, with the hydroxyl group being more reactive than in the phenols. Both isomers are soluble in simple alcohols, ethers, and chloroform. They can be used in the production of dyes and in organic synthesis.

1-Naphthol is a metabolite of the insecticide carbaryl and naphthalene. Along with TCPy, it has been shown to decrease testosterone levels in adult men.

1-Naphthol can be produced by fusion of 1-naphthylsulfonic acid with sodium hydroxide.

Uses

Main article: Molisch's test

α-Naphthol dissolved in ethanol, known as Molish's reagent, is used as reagent for detecting the presence of carbohydrates. The test known as Molisch's test would give a red- or purple-colored compound to indicate the presence of carbohydrate.

External links

• NIST Chemistry WebBook 1-Naphthalenol