| Chemical |
Tetrachloro-p-benzoquinone |
| CAS-number : |
118-75-2 |
| |
| Synonyms : |
| 2,5-cyclohexadiene-1,4-dione, 2,3,5,6-tetrachloro-. |
| chloranil |
| Tetrachloroquinone |
| tetrakloori-p-bentsokinoni |
| tetrakloorikinoni |
| |
| Sumformula of the chemical : |
| C6Cl4O2 |
| EINECS-number : |
| 2042744 |
| |
| Uses : |
Agricultural fungicide; dye intermediate; electrodes for pH
measurements; vulcanizing agent.
|
| |
| State and appearance : |
Yellow leaflets.
Solid (WPSREG 1994).
|
| |
| Molecular weight : |
245.9 |
| |
| Spesicif gravity (water=1) : |
| 1.97 |
|
| |
| Density, kg/m3 : |
| 1970 |
WPSREG 1994 |
| |
| Vapor pressure, mmHg : |
| 0.0000051 |
6.8x10-4Pa, 25°C, WPSREG 1994 |
| |
| Water solubility, mg/l : |
| 1 |
20°C, WPSREG 1994 |
| |
| Melting point, °C : |
| 290 |
|
| 289 |
289-300, |
| 300 |
WPSREG 1994 |
| |
| Sublimation point, °C : |
| 162.6 |
WPSREG 1994 |
| |
| pH : |
| 6.3 |
pure substance; 10% solution of technical substance: 3.5-4.5 |
| |
| Log octanol/water coefficient, log Pow : |
| 3 |
3.0 or 4.9, calculated estimates, |
| 4.9 |
WPSREG 1994 |
| |
| Henry's law constant, Pa x m3/mol : |
| 0.2 |
WPSREG 1994 |
| |
| Other physicochemical properties : |
Solubility in organic solvents:
benzene 1.7 g/l, 20°C
cool ethanol: slightly
hot ethanol: badly
diethylether: slightly
carbon disulphide: badly
carbon tetrachloride: badly
trichloromethan: badly
acetone: 33 g/100g
ether: 16 g/100g
dimethyl formamide 5.4 g/100g
methanol: about 0.1 g/100g
dibutyl phthalate: about 0.1 g/100g
(WPSREG 1994)
Self ignitive temperature >400°C, flammable (WPSREG 1994).
|
| |
| Hydrolysis in water : |
T1/2, 20°C, pH 4, about 14d,
T1/2, 20°C, pH 7, about 2d,
at pH 9 hydrolyzes immediately
T1/2, 50°C, pH 4, <2h
T1/2, 50°C, pH 7, <2h,
(WPSREG 1994).
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 4000 |
orl-rat, Nimmo et al. 1979 |
| |
-- |
| 4000 |
4000-7100, |
| 7100 |
WPSREG 1994 |
| |
| Other information of mammals : |
No ill effects were suffered by rats fed diet containing 0.5 %
(Verschueren 1983).
|
| |
| EC50 values to crustaceans, mg/l : |
| 0.36 |
EC65, Daphnia, 24hr, nominal concentration, |
| |
WPSREG 1994 |
| |
| LC50 values to fishes, mg/l : |
| 4.6 |
LC0, Leuciscus idus f. melanotus, 96hr, nominal |
| |
concentration, mechanical mixture, |
| |
WPSREG 1994 |
| |
| Other information : |
Lethal concentration to Pseudomonas fluorescens, 30min, 4.9
mg/l, nominal concentration of chloranil 1 mg/l decreased the
growth of Chlorella pyrenoidosa and Phormidium inudatum 5%
in pH 7, 10-12d (WPSREG 1994).
|
References |
| 1049 | Nimmo, D.R. et al. 1979.
Effect of diflubenzuron on an
estuarine crustacean.
Bull.
Environm.
Contam.
Toxicol. 22: 767
- 770. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
| 3119 | WPSREG.
Application for registration of wood preservatives/
slimicides.
National Board of Waters and the Environment,
Chemicals Control Unit.
|
