| Chemical |
Cacodylic acid |
| CAS-number : |
75-60-5 |
| |
| Synonyms : |
| dimethylarsinic acid. |
| Hydroxydimethylarsine oxide |
| |
| Sumformula of the chemical : |
| (CH3)2AsO2H
C2H7AsO2 |
| EINECS-number : |
| 2008834 |
| |
| Uses : |
Contact herbicide; cotton defoliant; nonselective contact
herbicide on noncrop areas.
|
| |
| State and appearance : |
Colourless crystals.
|
| |
| Odor : |
Odourless.
|
| |
| Water solubility, mg/l : |
| 2000000 |
at 25 °C |
| |
| Melting point, °C : |
| 192 |
192 - 198 °C |
| 198 |
|
| |
| Aerobic degradation in soil : |
The degradation of cacodylic acid in soils proceeds by two
mechanisms.
Under aerobic conditions 35 % was converted to a
volatile organoarsenical compound and 41 % to CO2 and AsO4-3
within a 24-week period (Woolson & Kearney 1973).
|
| |
| Anaerobic degradation in soil : |
The degradation of cacodylic acid in soils proceeds by two
mechanisms.
Under anaerobic conditions 61 % was converted to a
volatile organoarsenical within a 24-week period and was lost
from soil system.
The ultimate environmental fate of the
arsenic from cacodylic acid appears to be metabolized to
inorganic arsenate which is bound as insoluble compounds in the
soil (Woolson & Kearney 1973).
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 1350 |
technical product, orl-rat, Martin 1968 |
| |
| LD50 values to mammals in non-oral exposure , mg/kg : |
| 720 |
ipr-rat, male, Martin 1968 |
| 520 |
ipr-rat, female |
| 520 |
ipr-mus,male |
| 600 |
ipr-mus, female |
References |
| 897 | Martin, H. 1968.
Pesticide manual, British crop protection
council, Clacks Farm, Boreley, Ombersley, Droitwich, Worcester,
U.K. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
| 1893 | Woolson, E.A. & Kearney, P.C. 1973.
Persistence and reactions
of 14C-cacodylic acid in soils.
Environ.
Sci. & Techn. 7(1): 47
- 50. |
