1,2,3,4-Tetrahydronaphthalene (or tetralin) is a hydrocarbon that forms colorless liquid with naphthalene smell, which is an important derivative product from naphthalene. 1,2,3,4-Tetrahydronaphthalene is widely used in cemented carbide, coating, printing ink and pharmaceutical industries.
| Appearance | Clear Liquid |
| Color | ≤20Hazen |
| Tetrahydronaphthalene (GC) | ≥99.0% |
| Decahydronaphthalene (GC) | ≤1.0% |
| Naphthalene Content (GC) | ≤0.5% |
| Density (20ºC) | 969 kg/m3 |
| Flash Point | 78ºC |
| Freezing Point | -33 ºC |
| Viscosity (20ºC) | 2.2mPa.s |
| Solubility Parameters (25ºC) | 19.5(J/cm3)0.5 |
| Heat of Evaporation (200ºC) | 42.3 kJ/mol |
| Pressure of Evaporation (20ºC) | 0.24hpa |
| Refractive Index (25ºC ) | 1.539 |
| Boiling Point (1013hpa) | 204 ºC |