Registration Dossier
Registration Dossier
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EC number: 425-660-0 | CAS number: 165101-57-5
Endpoint summary
Administrative data
Description of key information
Additional information
Hydrolysis:
An assessment of the hydrolytic stability of the test material was performed in accordance with EU method C.7. The test material was shown to hydrolyse on contact with aqueous media. The respective half-lifes of the test item in the prepared buffer solutions (pH 4, pH 7, pH 9) at 10°C were below 4 hours.
Biodegradation:
The ready biodegradability of the test item was assessed by measurement of carbon dioxide (CO2) evolution according to OECD guideline 301 B and EU method C.4-C. Carbon dioxide evolution from the test item reached a mean of 63 % (66 % maximum) at the applied concentration over the course of the 28 day incubation. This exceeds the 60 % level that conventionally represents complete mineralisation. However, CO2 production failed to meet the ten day window requirement and, therefore, the test item cannot be classified as readily biodegradable. Nevertheless, the results of this study show that the test item is inherently biodegradable.
Distribution:
The test method for the determination of the adsorption coefficient (Koc) of a substance as described for liquid materials in test EU method C.19 was replaced by a theory based evaluation. Due to the fast and spontaneous hydrolysis of the test item upon contact with water, experimental determination of the Koc was technically not feasible. The log Koc of the test item was calculated using specialist chemical estimation software (PCKOC for Windows version 1.66 © US Environmental Protection Agency). The adsorption coefficient was estimated to be 1411, this corresponds to a log Koc of 3.15.
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