Registration Dossier
Registration Dossier
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EC number: 458-680-3 | CAS number: 797751-44-1 WASOX-VMAC2
Endpoint summary
Administrative data
Description of key information
Adsorption/desorption:
Data waiving: The substance undergoes rapid hydrolysis (half-life < 1h) in aqueous to acetone oxime and the corresponding silanols. Also methanol was identified as a degradation product in the hydrolysis study included in this dossier. Therefore, the adsorption potential of the degradation products has been calculated (EPISuite, KOCWIN v2.00).
Key study: An experimental determination of the adsorption coefficient KOC could not be performed, because: 1) the test substance rapidly degrades with a half-life time of <1 hour at 25 °C and 2) the test substance is a mixture of several compounds and reacts with water as part of the eluent. The estimated values (PCKOCWIN v.1.66, EPI Suite v.3.12) were found to be: VMAC2: log Koc = 4.3, VM2AC: log Koc= 3.6, VAC3: log Koc= 5.0.
Key study: KOCWIN v2.00, MCI method. Soil adsorption coefficient (Koc) of the degradation product methanol was estimated to be 1 L/kg and Log Koc = 0.0000.
Key study: KOCWIN v2.00, MCI method. Soil adsorption coefficient (Koc) of the degradation product acetone oxime was estimated to be 60.7 L/kg and Log Koc = 1.7832.
Additional information
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