Hexachlorocyclohexa-2,5-dien-1-one

Hexachlorocyclohexa-2,5-dien-1-one

Names
Preferred IUPAC name 2,3,4,4,5,6-Hexachlorocyclohexa-2,5-dien-1-one
Systematic IUPAC name Hexachlorocyclohexa-2,5-dien-1-one
Other names Hexachlorophenol
Identifiers
CAS Number	599-52-0 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	62251 Y
PubChem CID	69029
RTECS number	SN1575000
InChI InChI=1S/C6Cl6O/c7-1-3(13)2(8)5(10)6(11,12)4(1)9 Key: SLKWROUNLHVIIQ-UHFFFAOYSA-N
SMILES ClC1=C(Cl)C(Cl)(Cl)C(Cl)=C(Cl)C1=O O=C1C(=C(Cl)C(Cl)(Cl)C(=C1Cl)Cl)Cl
Properties
Chemical formula	C6Cl6O
Molar mass	300.77 g·mol−1
Melting point	113 °C (235 °F; 386 K)
Hazards
R-phrases (outdated)	R22,R36,R38,R40,R50,R53
S-phrases (outdated)	(S2),S36,S37,S60,S61
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Hexachlorocyclohexa-2,5-dien-1-one, sometimes informally called hexachlorophenol (HCP) is an organochlorine compound. It can be prepared from phenol. Despite the informal name, the compound is not a phenol but is a ketone. The informal name is derived from its method of preparation which includes phenol as a reagent.

HCP is normally produced by chlorination of phenol by chlorine in the presence of metal chloride catalyst, such as ferric chloride. It can also be produced by alkaline hydrolysis of polychlorinatedbenzenes at high temperature and pressure, by conversion of diazonium salts of chlorinated anilines, or by chlorination of phenolsulphonic acids and benzenesulphonic acids followed by removal of the sulphonic acid group. The hydrolysis of HCP gives chloranil.