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 (Jmol)	Interactive image
ChemSpider	59971
ECHA InfoCard	100.001.619
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/cm^3
Melting point	≥300 °C
Acidity (pKa)	2.95, 4.97[2]
Hazards
R-phrases	R36/37/38
S-phrases	S26 S36
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.

See also

• Chloranil

References

1. "Chloranilic acid". Sigma-Aldrich.
2. 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.