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Environmental fate & pathways

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ABIOTIC DEGRADATION IN AIR


DIRECT PHOTOLYSIS in air
The registration substance does not absorb light >290 nm (ozone band) and therefore a direct photolysis in air will not occur. INDIRECT PHOTOLYSIS in air


OH radical induced indirect photolysis of the registration substance can be estimated with US EPA AOPWIN Program estimating a low degradation half-life of 2.9 h (24h day, 0.5 E+6 OH/cm3).


ABIOTIC DEGRADATION IN WATER


HYDROLYSIS


In a preliminary OECD111 test solutions of the test substance at pH 4, pH 7 and pH 9 are thermostated at 50 °C.
The gas chromatograms of the test substance after hydrolysis test and after immediate analysis (recovery test) show no significant differences at the respective pH values. Also, the recovery rates of the test substance are comparable at respective pH values.
Therefore, it can be concluded that the test substance is hydrolytically stable at pH 4, pH 7 and pH 9 (t0.5 25 °C > 1 year).


DIRECT PHOTOLYSIS in water
The registration substance
does not absorb light >290 nm (ozone band) and therefore a direct photolysis in water will not occur.


INDIRECT PHOTOLYSIS in water


OH radical induced indirect photolysis of the registration substance in water can be estimated with US EPA AOPWIN Program estimating a low degradation half-life of 2.9 h (24h day, 0.5 E+6 OH/cm3).


 


ABIOTIC DEGRADATION IN SOIL


 


DIRECT PHOTOLYSIS in soil


The registration substance does not absorb light >290 nm (ozone band) and therefore a direct photolysis on soil surface will not occur.


INDIRECT PHOTOLYSIS in soil


OH radical induced indirect photolysis of the registration substance can be estimated with US EPA AOPWIN Program estimating a low degradation half-lifeof 2.9 h (24h day, 0.5 E+6 OH/cm3).

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