Tetrachlorocatechol

Tetrachlorocatechol
Names
	Other names 3,4,5,6-Tetrachloro-1,2-benzenediol, Tetrachloropyrocatechol
Identifiers
CAS Number	1198-55-6 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1876366
ChEBI	CHEBI:26889;
ChemSpider	13880;
ECHA InfoCard	100.150.164
EC Number	621-298-4;
Gmelin Reference	3937
KEGG	C18240;
PubChem CID	14537;
UNII	5REG09UJO0;
CompTox Dashboard (EPA)	DTXSID4022151 ;
	InChI InChI=1S/C6H2Cl4O2/c7-1-2(8)4(10)6(12)5(11)3(1)9/h11-12H Key: RRBMVWQICIXSEO-UHFFFAOYSA-N;
	SMILES C1(=C(C(=C(C(=C1Cl)Cl)Cl)Cl)O)O;
Properties
Chemical formula	C6H2Cl4O2
Molar mass	247.88 g·mol−1
Appearance	white solid
Density	1.848 g/cm3 (20 °C)
Melting point	194 °C (381 °F; 467 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H318, H400
Precautionary statements	P264, P264+P265, P270, P273, P280, P301+P317, P305+P354+P338, P317, P330, P391, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tetrachlorocatechol is an organochlorine compound with the formula C₆Cl₄(OH)₂. It is a white solid. It results from the degradation of the controversial pesticide pentachlorophenol.^[2] It is a precursor to the reagent TRISPHAT. Its conjugate base also functions as a ligand for transition metals.^[3]

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