Chloranilic acid

Chloranilic acid[1]
Names
	Preferred IUPAC name 2,5-Dichloro-3,6-dihydroxycyclohexa-2,5-diene-1,4-dione
	Other names 2,5-Dichloro-3,6-dihydroxy-1,4-benzoquinone; 2,5-Dichloro-3,6-dihydroxybenzoquinone
Identifiers
CAS Number	87-88-7;
3D model (JSmol)	Interactive image;
ChemSpider	59971;
ECHA InfoCard	100.001.619
EC Number	201-780-7;
PubChem CID	66604;
UNII	YJ8L3BB7Y4;
CompTox Dashboard (EPA)	DTXSID3058959 ;
	InChI InChI=1/C6H2Cl2O4/c7-1-3(9)5(11)2(8)6(12)4(1)10/h9,12H Key: IPPWILKGXFOXHO-UHFFFAOYAU;
	SMILES Cl\C1=C(/O)C(=O)C(\Cl)=C(\O)C1=O;
Properties
Chemical formula	C6H2Cl2O4
Molar mass	208.98 g/mol
Appearance	orange or red crystals or powder
Density	1.93 g/cm3
Melting point	≥300 °C
Acidity (pKa)	2.95, 4.97[2]
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Flash point	135.4 °C (275.7 °F; 408.5 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chloranilic acid is an organic compound with the chemical formula C₆H₂Cl₂O₄.

References

"Chloranilic acid". Sigma-Aldrich.
Mostafa, S. I. (1999). "Complexes of 2,5-Dihydroxy-1,4-Benzoquinone and Chloranilic Acid with Second and Third Row Transition Elements". Transition Metal Chemistry. 24 (3): 306–310. doi:10.1023/A:1006944124791.

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