Chrysene is a polycyclic aromatic hydrocarbon (PAH) with the molecular formula C
12 that consists of four fused benzene rings. It is a natural constituent of coal tar, from which it was first isolated and characterized. It is also found in creosote at levels of 0.5-6 mg/kg.
|Preferred IUPAC name
1,2-Benzophenanthrene; 1,2-Benzphenanthrene; Benzo[a]phenanthrene; NSC 6175; Phenacene
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||228.294 g·mol−1|
|Melting point||254 °C (489 °F; 527 K)|
|Boiling point||448 °C (838 °F; 721 K)|
|Solubility in ethanol||1 g/1300 mL|
|Pyrene, Tetracene, Triphenylene|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
The name "chrysene" originates from Greek Χρύσoς (chrysos), meaning "gold", and is due to the golden-yellow color of the crystals of the hydrocarbon, thought to be the proper color of the compound at the time of its isolation and characterization. However, high purity chrysene is colorless, the yellow hue being due to the traces of its yellow-orange isomer tetracene, which cannot be separated easily.
As with other PAHs, chrysene is suspected to be a human carcinogen. Some evidence suggests that it causes cancer in laboratory animals, but chrysene is often contaminated with more strongly carcinogenic compounds. Chrysene is estimated to have about 1% of the toxicity of benzo(a)pyrene.
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- Merck Index, 14th edition
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- TOXICOLOGICAL PROFILE FOR POLYCYCLIC AROMATIC HYDROCARBONS
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