Registration Dossier

Environmental fate & pathways

Biodegradation in soil

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Description of key information

Key value for chemical safety assessment

Additional information

Testing is waived on the basis that the chemical safety assessment according to Annex I indicates that it is not necessary to conduct the soil simulation test. Simulation test (soil) is not considered necessary because:

 

· The substance hydrolyses rapidly and the silanol hydrolysis product has a low log Kow value and, therefore, exposure of the soil compartment is expected to be low. 

· The risk characterisation ratios (RCRs) for the soil compartment, based on the assumption that the silanol hydrolysis product is not biodegradable, are <1. 

· The non-silanol hydrolysis product, methanol, is readily biodegradable.