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Environmental fate & pathways

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In absence of further data from the proposed simulation study for 1H-Benzotriazole, sodium benzotriazolate is considered as persistent in the environment. From observations in inherent biodegradability studies with 1H-Benzotriazole a potential of biotic degradation could be assumed. In addition, QSAR estimations with BIOWIN (v.4.10) show indications on inherent degradation of the triazoles in the environment.

Due to low volatility of sodium benzotriazolate, photodegradation in the atmosphere is considered as minor pathway for abiotic degradation. Nevertheless photolytic degradation in water is assumed to play a relevant part in the fate of benzotriazoles.

Notwithstanding sodium benzotriazole is classified as highly mobile in soil (McCall scheme) based on available data from a guideline study additional factors for interactions with soil and suspended matter have to be considered. The large dipole moment in the molecule promote binding with the solid parts in soil and water influencing retention time and bioavailability. In line with all findings soil and water has been identified as major compartments of concern.

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