2-Naphthol
SIAL/70450 - fluorescence indicator, ≥99.0%
Synonym: β-Naphthol; 2-Hydroxynaphthalene
CAS Number: 135-19-3
Empirical Formula (Hill Notation): C10H8O
Molecular Weight: 144.17
EC Number: 205-182-7
MDL Number: MFCD00004067
Linear Formula: C10H7OH
Product Type: Chemical
| assay | ≥99.0% |
| ≥99.0% (GC) | |
| bp | 285-286 °C (lit.) |
| form | solid |
| grade | fluorescence indicator |
| ign. residue | ≤0.05% |
| impurities | ≤0.5% 1-naphthol |
| InChI | 1S/C10H8O/c11-10-6-5-8-3- |
| InChI key | JWAZRIHNYRIHIV-UHFFFAOYSA |
| mp | 120-122 °C (lit.) |
| 121-122 °C | |
| Quality Level | 100  |
| SMILES string | Oc1ccc2ccccc2c1 |
| vapor density | 4.97 (vs air) |
| vapor pressure | 10 mmHg ( 145.5 °C) |
| 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. |
| 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. |
| Symbol |   GHS07,GHS09 |
| Signal word | Warning |
| Hazard statements | H302 + H332 - H400 |
| Precautionary statements | P273 - P301 + P312 + P330 - P304 + P340 + P312 |
| Hazard Codes | Xn,N |
| Risk Statements | 20/22-50 |
| Safety Statements | 24/25-61 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | WGK 2 |
| Flash Point(F) | 307.4 °F - closed cup |
| Flash Point(C) | 153 °C - closed cup |
| Purity | ≥99.0% (GC); ≥99.0% |
| bp | 285-286 °C (lit.) |
| mp | 120-122 °C (lit.); 121-122 °C |
| UNSPSC | 12171500 |