|Preferred IUPAC name
|Systematic IUPAC name
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||154.212 g·mol−1|
|Appearance||White or pale yellow crystalline powder|
|Melting point||93.4 °C (200.1 °F; 366.5 K)|
|Boiling point||279 °C (534 °F; 552 K)|
|0.4 mg/100 ml|
|Solubility in ethanol||slight|
|Solubility in chloroform||slight|
|Solubility in benzene||very soluble|
|Solubility in acetic acid||soluble|
|Safety data sheet||ICSC 1674|
|NFPA 704 (fire diamond)|
|Flash point||135 °C (275 °F; 408 K)|
|> 450 °C (842 °F; 723 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Acenaphthene is a polycyclic aromatic hydrocarbon (PAH) consisting of naphthalene with an ethylene bridge connecting positions 1 and 8. It is a colourless solid. Coal tar consists of about 0.3% of this compound.
Acenaphthene was prepared the first time from coal tar by Marcellin Berthelot. Later Berthelot and Bardy synthesized the compound by cyclization of α-ethylnaphthalene. Industrially, it is still obtained from coal tar together with its derivative acenaphthylene (and many other compounds).
It is used on a large scale to prepare naphthalene dicarboxylic anhydride, which is a precursor to dyes and optical brighteners. Naphthalene dicarboxylic anhydride is the precursor to perylenetetracarboxylic dianhydride, precursor to several commercial pigments and dyes.