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Environmental fate & pathways

Biodegradation in soil

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Description of key information

A test on biodegradation in soil is scientifically not necessary.

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A test on biodegradation in soil is scientifically not necessary, as the substance hydrolyses rapidly in water at environmental pH (Half lifeat pH7 2.9 days at 20°C, 2.5 days at 25°C, and at pH 9 the half life is 1.2 days at 20 °C). Furthermore the substance proved to be inherently biodegradable (> 90% COD elimination after 28 d according to German Guideline DIN 38412, Part 25, corresponding to OECD 302 B). In a study conducted similar to OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units), the closely related substance partially unsaturated IQAC, DMS quaternised (CAS 86088-85-9) was eliminated for > 90% in a modified activated sludge unit.