Hexachlorobenzene
Hexachlorobenzene, or perchlorobenzene, is an aryl chloride and a six-substituted chlorobenzene with the molecular formula C6Cl6. It is a fungicide formerly used as a seed treatment, especially on wheat to control the fungal disease bunt. It has been banned globally under the Stockholm Convention on Persistent Organic Pollutants.
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| Names | |||
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| Preferred IUPAC name
Hexachlorobenzene | |||
| Other names
Perchlorobenzene; HCB; Julin's chloride of carbon | |||
| Identifiers | |||
3D model (JSmol) |
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| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.003.886 | ||
| KEGG | |||
PubChem CID |
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| UNII | |||
CompTox Dashboard (EPA) |
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| Properties | |||
| C6Cl6 | |||
| Molar mass | 284.77 g·mol−1 | ||
| Appearance | White crystalline solid | ||
| Density | 2.04 g/cm3 | ||
| Melting point | 228.83 °C (443.89 °F; 501.98 K) | ||
| Boiling point | 325 °C (617 °F; 598 K) | ||
| insoluble | |||
| Solubility in other solvents | slightly soluble in ethanol; soluble in diethyl ether and chloroform; very soluble in benzene | ||
| log P | 5.47 | ||
| −147.0·10−6 cm3/mol | |||
| Thermochemistry | |||
Heat capacity (C) |
201.2 J·mol−1·K−1 | ||
Std molar entropy (S⦵298) |
260.2 J·mol−1·K−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
−127.6 kJ·mol−1 | ||
Enthalpy of fusion (ΔfH⦵fus) |
25.2 kJ·mol−1 | ||
| Related compounds | |||
Related compounds |
Benzene Hexafluorobenzene Hexabromobenzene Hexaiodobenzene | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
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