Registration Dossier
Registration Dossier
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EC number: 213-944-5 | CAS number: 1068-27-5
Endpoint summary
Administrative data
Description of key information
In a closed bottle test according to OECD guideline 301, no biodegradation was observed.
The half-life of the test item at pH 7 at 20 °C was determined to be 9.0 days.
The logKoc of the test item was estimated to be 4.06.
Additional information
Hydrolysis:
In a preliminary test was determined that the test item is not stable in water. Therefore, the performance of a main test was required.
In a main test, the calculated half-life of the hydrolysis reactions at 20 °C at pH 4, pH 7 and pH 9 were calculated to be:
pH 4 - 7.6 days
pH 7 - 9.0 days
pH 9 - 8.8 days
Biodegradation:
The ready biodegradability of the test item was assessed according to OECD guideline 301 D (Closed Bottle Test) and EU-method C.6. The test item was biodegraded 4 % at day 28 . In the prolonged Closed Bottle Test this compound was biodegraded 0% at day 140. Therefore, it can be concluded that the test item is not readily biodegradable.
Adsorption/desorption:
The adsorption coefficient of the test substance was estimated on soil and on sewage sludge using High Performance Liquid Chromatography (HPLC). The test was conducted in accordance with the OECD guideline 121 and EU method C. 19. This method is applicable for substances, which have log Koc value ranging from 1.5 to 5.0. The adsorption coefficient Koc was estimated to be 11474 ± 276 (95 % confidence interval) and the log Koc was 4.06 ± 0.012 (95 % confidence interval).
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