| Chemical |
Difenzoquat |
| CAS-number : |
49866-87-7 |
| |
| Synonyms : |
| 1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium |
| 1H-Pyrazolium, 1,2-dimethyl-3,5-diphenyl- (CAS 49866-87-7) |
| 1H-Pyrazolium, 1,2-dimethyl-3,5-diphenyl-, methyl sulfate (CAS 43222-48-6) |
| Difentsokvatti |
| Difenzoquat methyl sulfate |
| |
| Sumformula of the chemical : |
| C17H17N2 (CAS 48866-87-7);
C17H17N2.CH3O4S (CAS 43222-48-6) |
| EINECS-number : |
| 2565053;
2561525 |
| |
| Uses : |
Active ingredient in herbicides.
|
| |
| Vapor pressure, mmHg : |
| 0.0000001 |
at 20 °C, exact 0.000000098, CAS 43222-48-6, PESREG |
| |
| Water solubility, mg/l : |
| 76 |
at 25 °C, CAS 43222-48-6, PESREG |
| |
| Melting point, °C : |
| 155 |
155 - 157, CAS 43222-48-6, |
| 157 |
PESREG |
| |
| Log octanol/water coefficient, log Pow : |
| 0.11 |
CAS 43222-48-6 |
| |
| Adsorption/desorption : |
Strongly absorbed by soil (CAS 43222-48-6) (Pesticide Manual
1994).
|
| |
| Photochemical degradation in soil : |
Photolytic demethylation occurs readily, giving monomethyl
pyrazole (CAS 43222-48-6) (Pesticide Manual 1994).
|
| |
| Photochemical degradation in water : |
Photolytic demethylation occurs readily, giving monomethyl
pyrazole (CAS 43222-48-6) (Pesticide Manual 1994).
|
| |
| Total degradation in soil : |
Degradation in soil, half-life c. 3 months (CAS 43222-48-6).
No significant microbial degradation occurs (Pesticide Manual
1994).
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 270 |
RTECS 1994 |
| |
| Other information of birds : |
LC50, 4640 mg/kg, 8 days, Coturnix coturnix, as difenzoquat
(PESREG)
|
| |
| Effects on invertebrates : |
LD50, >246 mg/kg, 14 days, Eisenia foetida, as difenzoquat
(PESREG)
|
| |
| Effects on bees : |
LD50, 36.2 µg/bee, honey bee, relatively non-toxic as
difenzoquat (PESREG).
|
| |
| EC50 values to algae, mg/l : |
| 0.29 |
72hr, Scenedesmus subspicatus, CAS 49866-87-7 |
| 0.4 |
72hr, Scenedesmus subspicatus, CAS 43222-48-6 |
| |
PESREG |
| |
| EC50 values to crustaceans, mg/l : |
| 2.6 |
48hr, Daphnia magna, CAS 49866-87-7, PESREG |
| |
| LC50 values to fishes, mg/l : |
| 696 |
96hr, Lepomis macrochirus |
| 694 |
96hr, Salmo gairdneri |
| |
Pesticide Manual 1983 |
| |
-- |
| 694 |
96hr, Salmo gairdneri, CAS 49866-87-7, PESREG |
| |
-- |
| 21.9 |
48hr, Cyprinidae, CAS 43222-48-6, ASTER 1994 |
References |
| 70 | Anon. 1983c.
Pesticide Manual.
Worthing, C.R.
(toim.)
A world compedium.
The British Crop Biotection Council.
London. 7 th edition. |
| 3109 | ASTER 1993 -.
Assessment Tool for the Evaluation of Risk
(including the AQUIRE database).
USEPA, Environmental Research
Laboratory.
|
| 2779 | PESREG.
Application for registration of pesticides accepted by
the Pesticide Commission, National Board of Waters and the
Environment, Chemical Control Unit.
|
| 3115 | RTECS Database 1992 -.
Registry of Toxic Effects of Chemical
Substances.
National Institute of Occupational Safety and
Health, USA.
TOMES Plus CD-ROM.
|
| 3252 | The Pesticide Manual 1994.
Tomlin, C.
(ed.), 10th edition.
British Crop Protection Council.
The Royal Society of
Chemistry.
The Pesticide Manual 1994.
Tomlin, C.
(ed.), 10th edition.
British Crop Protection Council.
The Royal Society of
Chemistry.
|
