Registration Dossier
Registration Dossier
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EC number: 937-237-2 | CAS number: 1370006-50-0
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Partially unsaturated IQAC, DMS quaternised was eliminated for > 90% in a modified activated sludge unit. Simulation testing of partially unsaturated IQAC in sediments is therefore not necessary.
Key value for chemical safety assessment
Additional information
In a study conducted similar to OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units), Partially unsaturated IQAC, DMS quaternised was eliminated for > 90% in a modified activated sludge unit. The nitrification of the sludge unit was > 95%. The ammonium concentration was < 2 mg/L in the effluent.
Therefore simulation testing of Partially unsaturated IQAC in sediments is not necessary. In addition the substance is expected to hydrolyse rapidly in water. The closely related substance Oleic-acid based IQAC hydrolyses rapidly in water at environmental pH (Half life at pH7 2.9 days at 20°C, 2.5 days at 25°C, and at p H 9 the half life is 1.2 days at 20 °C).
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