| Physical Description |
Methylnaphthalene appears as bluish-brown oil or a clear yellow liquid. Coal tar or mothball odor. (NTP, 1992) |
| Color/Form |
Colorless liquid or oil |
| Boiling Point |
450 to 590 °F at 760 mmHg (NTP, 1992) |
| Melting Point |
-8 °F (NTP, 1992) |
| Flash Point |
greater than 200 °F (NTP, 1992) |
| Solubility |
less than 1 mg/mL at 64 °F (NTP, 1992) |
| Density |
1.01 at 59.9 °F (NTP, 1992) - Denser than water; will sink |
| Vapor Density |
4.91 (NTP, 1992) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure |
23 mmHg at 77 °F ; 31 mmHg at 122 °F; 38 mmHg at 158 °F (NTP, 1992) |
| LogP |
log Kow of 3.87 |
| Henry's Law Constant |
Henry's Law constant = 5.14X10-4 atm-cu m/mol at 25 °C |
| Stability/Shelf Life |
This chemical is stable under normal laboratory conditions. Solutions of this chemical in water, DMSO, 95% ethanol or acetone should be stable for 24 hours under normal lab conditions. |
| Autoignition Temperature |
984 °F (USCG, 1999) |
| Decomposition |
When heated to decomposition it emits acrid smoke and irritating fumes |
| Heat of Vaporization |
36.00 kJ/mol at 100.5 °C |
| Odor Threshold |
Odor Threshold Low: 0.02 [mmHg] Odor threshold = 0.02 ppm at 60 °C (detection) |
| Refractive Index |
Index of refraction: 1.6170 at 20 °C |
| Collision Cross Section |
125.2 Ų [M+H]+ [CCS Type: DT, Method: stepped-field] |
| Kovats Retention Index |
1289.6 1289.6 1283 1293 1288.1 1286 1296 1285.68 1286.53 1287 1321 1272.66 1283.05 1289.57 1282 1330.12 1297.8 1318 1318 1318 1326 1300 1263 1268 1277 1278 1306 1326 1327 1268 1281 1303 1318 1282 1309 1295 1295 1298 1305 1302 1299 1289 1287.9 1328 1282 1298.4 1293 1290 1309 1321 1281 1301.7 1276 1273 1276 1277 1271 1282 1272 1278 1268 1288 1284 1289 1312 221 223.1 |
| Other Experimental Properties |
Heat of fusion: 6.95 kJ/mol |
| Chemical Classes |
Other Classes -> Naphthalenes |
