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70450

2-Naphthol

Name: 2-Naphthol
Brand: SIAL

≥99.0%

Synonym(s):

β-Naphthol, 2-Hydroxynaphthalene

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About This Item

Linear Formula:

C₁₀H₇OH

CAS Number:

135-19-3

Molecular Weight:

144.17

UNSPSC Code:

12171500

NACRES:

MA.02

PubChem Substance ID:

329762457

EC Number:

205-182-7

Beilstein/REAXYS Number:

742134

MDL number:

MFCD00004067

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Properties

vapor density

4.97 (vs air)

Quality Level

100

vapor pressure

10 mmHg ( 145.5 °C)

assay

≥99.0% (GC), ≥99.0%

form

solid

impurities

≤0.5% 1-naphthol

ign. residue

≤0.05%

bp

285-286 °C (lit.)

mp

120-122 °C (lit.), 121-122 °C

fluorescence

λ_ex 320 nm; λ_em 410 nm in 0.1 M NaOH

SMILES string

Oc1ccc2ccccc2c1

InChI

1S/C10H8O/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7,11H

InChI key

JWAZRIHNYRIHIV-UHFFFAOYSA-N

Gene Information

human ... CYP1A2(1544)

Description

General description

2-Naphthol (2OH) is a hydroxyarene molecule, which when electronically excited forms strong acid. Excited 2OH dissociates only in water. It has a slight phenolic odor. It is incompatible with strong oxidizing agents, strong bases, acid chlorides and acid anhydrides. It is one of the most commonly used fluorescence dye.

Application

2OH has been used as a fluorescence indicator which changes fluorescence intensity at varied temperatures when embedded in aqueous Poly(vinly alcohol)/borax gel networks.