| Melting point | 80-82 °C (lit.) |
| Boiling point | 218 °C (lit.) |
| density | 0.99 |
| vapor density | 4.4 (vs air) |
| vapor pressure | 0.03 mm Hg ( 25 °C) |
| refractive index | 1.5821 |
| Fp | 174 °F |
| storage temp. | Store below +30°C. |
| solubility | methanol: soluble50mg/mL, clear, colorless |
| form | Faint beige to brown to salmon red powder |
| color | White to almost white |
| Specific Gravity | 1.145 |
| explosive limit | 0.9-5.9%(V) |
| Water Solubility | 30 mg/L (25 ºC) |
| Merck | 14,6370 |
| BRN | 1421310 |
| Henry's Law Constant | 5.64 at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999) |
| Exposure limits | TLV-TWA 10 ppm （～50 mg/m3) (ACGIH, MSHA, and OSHA); STEL 15 ppm (～75 mg/m3) (ACGIH); IDLH 500 ppm. |
| InChIKey | UFWIBTONFRDIAS-UHFFFAOYSA-N |
| CAS DataBase Reference | 91-20-3(CAS DataBase Reference) |
| IARC | 2B (Vol. 82) 2002 |
| NIST Chemistry Reference | Naphthalene(91-20-3) |
| EPA Substance Registry System | Naphthalene (91-20-3) |
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