Registration Dossier
Registration Dossier
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EC number: 601-779-5 | CAS number: 121451-02-3
Endpoint summary
Administrative data
Description of key information
biodegradability in water were 0.2 and 4.0% respectively
half life in soil was calculated to 267 to 315 days
Additional information
Biodegradability in Water - Screening
A study was conducted to investigate the potential of the test material to undergo biodegradation in accordance with the standardised guideline OECD 301B under GLP conditions. The study was awarded a reliability score of 1 in line with the criteria set forth by Klimisch et al. (1997).
The test material systems yielded theoretical CO₂ (ThCO₂) values of 0.2 and 4.0 % for replicates 1 and 2, respectively, by day 29 of the study. Therefore, the test material cannot be classified as readily biodegradable according to the criteria outlined in the testing guideline.
Biodegradability in Soil
The degradation of the test material in soil was investigated in accordance with the standardised guidelines PA 161-2 and 163-1 and OECD II 7.1.1 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
Degradation of ¹⁴C-aniline and ¹⁴C-benzoyl labelled test material was studied on three U. S. soils. The half-life of the test material in soil under aerobic conditions ranged from 267 to 315 days. Two metabolites were identified in the ¹⁴C-aniline-labelled samples: the urea and amine. Only ¹⁴CO₂ was identified as a metabolite from the ¹⁴C-benzoyl-labelled samples. Bound residues increased steadily and were qualitatively characterized as humin, humic acid, and fulvic acid, and therefore did not contain additional amounts of parent test material or metabolites. The test material is not considered to be at risk for leaching due to its high apparent Kd (96 mL/g) and low water solubility.
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