Registration Dossier
Registration Dossier
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EC number: 246-309-6 | CAS number: 24549-06-2
Endpoint summary
Administrative data
Description of key information
Additional information
Using the estimation program EPI Suite(APOWIN v1.91) the calculated atmospheric half-life for 6-ethyl-2-toluindine accounts for 2.4 hours assuming OH-radicals as sensitzers (Bayer Industry Services 2004).
The biodegradation of 2-methyl-6-ethylaniline was investigated with a concentration of 20 mg/l related to DOC as the sole source of organic carbon. Activated sludge used was of domestic origin. After 28 days a degradation rate of 6 % was determined. (Bayer AG 1989) Another test with adapted activated sludge was carried out with 3, 10, and 30 mg/l test substance. BOD measurements performed between 0 and 30 days showed no degradation of 2-methyl-6-ethylaniline. (Bayer AG 1973) Based on these test results
2-ethyl-6-mthylaniline was classified as not readily biodegradable.
Under aerobic test conditions no biodegradation in soil was observed within 128 days applying 6-ethyl-2-toluidine as test item (Konopka 1991). Under anaerobic test coditions less than 30 % of 6-ethyl-2-toluidine were degraded in soil within 30 days (Konopka 1994).
The bioaccumulation potential of 6 -ethyl-2 -toluidine is characterized by an estimated BCF of 22.36 (Bayer Industry Services 2004) indicating a low potential to bioaccumulate.
The adsorption/desorption behaviour of 6 -ethyl-2 -toluidine is characterized by an estimated logKoc of 2.37 (Bayer Industry Services, 2004) indicating a low potential to sorb on soil or sediment.
6 -Ethyl-2 -toluidne is characterized by a Henrys Law Constant (25°C) of 0.31 Pa*m³/mole calculated according to the Bond Method using EPI Suite software (Bayer Industry Services 2004). Therefore, the substance has a low migration potential from water to air whereas the rate is controlled by the slow diffusion through air.
Calculation according to Mackay Level I, the target compartment of the environmental distribution of 2-ethyl-6-methylaniline is water with 80 %, followed by air with 14 %, and soil and sediment in each case 2.9 %. (Currenta 2009)
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