1-Naphthol
SIAL/31097 - PESTANAL®, analytical standard
Synonym: α-Naphthol; 1-Hydroxynaphthalene
CAS Number: 90-15-3
Empirical Formula (Hill Notation): C10H8O
Molecular Weight: 144.17
EC Number: 201-969-4
MDL Number: MFCD00003930
Linear Formula: C10H7OH
Product Type: Chemical
application(s) | forensics and toxicology pharmaceutical (small molecule) |
assay | ≥98.0% (GC) |
autoignition temp. | 1007 °F |
bp | 278-280 °C (lit.) |
expl. lim. | 5 % |
format | neat |
grade | analytical standard |
InChI | 1S/C10H8O/c11-10-7-3-5-8- |
InChI key | KJCVRFUGPWSIIH-UHFFFAOYSA |
mp | 94-96 °C (lit.) |
product line | PESTANAL® |
Quality Level | 100 ![]() |
shelf life | limited shelf life, expiry date on the label |
SMILES string | Oc1cccc2ccccc12 |
technique(s) | gas chromatography (GC): suitable |
HPLC: suitable | |
vapor density | 4.5 (120 °C, vs air) |
vapor pressure | 1 mmHg ( 94 °C) |
Application: | 1-Naphthol may be used as a reference standard for the determination of 1-naphthol: • In human urine by a rapid and automated method based on coupled-column liquid chromatography (LC-LC) with fluorescence detection. • In canned fruit juices by reversed-phase high performance liquid chromatography with diode-array detection. |
Application: | Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. |
General description: | 1-Naphthol, a metabolite of carbaryl and naphthanlene. It is formed by spontaneous reaction from (1R, 2S)-Naphthalene epoxide followed to form 1, 4-Dihydroxynaphthalene. |
Legal Information: | PESTANAL is a registered trademark of Sigma-Aldrich International GmbH |
Symbol | ![]() ![]() ![]() ![]() |
Signal word | Danger |
Hazard statements | H302 - H311 - H315 - H317 - H318 - H335 - H371 - H410 |
Precautionary statements | P273 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 - P308 + P311 |
Hazard Codes | Xn,N |
Risk Statements | 21/22-37/38-41-51/53 |
Safety Statements | 22-26-37/39-61 |
RIDADR | UN2811 - class 6.1 - PG 3 - EHS - Toxic solids, organic, n.o.s., |
WGK Germany | WGK 1 |
Flash Point(F) | 257.0 °F - closed cup |
Flash Point(C) | 125 °C - closed cup |
Purity | ≥98.0% (GC) |
bp | 278-280 °C (lit.) |
mp | 94-96 °C (lit.) |
UNSPSC | 41116107 |