1-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). It has a cetane number of zero, and was previously used as the lower reference for cetane number. However, due to the expense and handling difficulty of 1-methylnaphthalene, it was replaced in this capacity by isocetane, with a CN of 15.
- Formula
- C11H10
- Molar mass
- 142.201 g/mol
- CAS Number
- 90-12-0
- Density
- 1.001 g/cm3 at 25°C (77°F)
- Purity/Grade
- 95%
- Appearence
- Liquid
- Melting point/freezing point
- Melting point/range: -22°C (-8°F) - lit.
- Initial boiling point and boiling range
- 240 - 243°C (464 - 469°F) - lit.
- Flash point
- 82°C (180°F) - closed cup