Chrysene

Chrysene
Names
	Preferred IUPAC name Chrysene
	Other names 1,2-Benzophenanthrene; 1,2-Benzphenanthrene; Benzo[a]phenanthrene; NSC 6175; [4]Phenacene
Identifiers
CAS Number	218-01-9 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1909297
ChEBI	CHEBI:51687 ;
ChEMBL	ChEMBL85685 ;
ChemSpider	8817 ;
ECHA InfoCard	100.005.386
EC Number	205-923-4;
Gmelin Reference	262600
KEGG	C14222 ;
PubChem CID	10457109;
RTECS number	GC0700000;
UNII	084HCM49PT ;
CompTox Dashboard (EPA)	DTXSID0022432 ;
	InChI InChI=1S/C18H12/c1-3-7-15-13(5-1)9-11-18-16-8-4-2-6-14(16)10-12-17(15)18/h1-12H Key: WDECIBYCCFPHNR-UHFFFAOYSA-N ; InChI=1/C18H12/c1-3-7-15-13(5-1)9-11-18-16-8-4-2-6-14(16)10-12-17(15)18/h1-12H Key: WDECIBYCCFPHNR-UHFFFAOYAK;
	SMILES c1ccc2c(c1)ccc3c2ccc4c3cccc4;
Properties
Chemical formula	C18H12
Molar mass	228.294 g·mol−1
Appearance	white solid
Density	1.274 g/cm3
Melting point	254 °C (489 °F; 527 K)
Boiling point	448 °C (838 °F; 721 K)
Solubility in water	Insoluble
Solubility in ethanol	1 g/1300 mL
Magnetic susceptibility (χ)	-166.67·10−6 cm3/mol
Related compounds
Related PAHs	Pyrene, Tetracene, Triphenylene
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Chrysene is a polycyclic aromatic hydrocarbon (PAH) with the molecular formula C
₁₈H
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.

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.

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