Registration Dossier
Registration Dossier
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EC number: 238-405-1 | CAS number: 14433-76-2
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
In a GLP-Study according to the test guideline (U.S.) EPA 540/9-82-021, Subdivision N, Section 162-1, the DT-50 (half life) value of the test substance in sandy loam was determined to be 2.2 hours.
In a GLP-study according to the German BBA guideline Part IV, 4-1, the rate of mineralization of the test substance amounted to >70% of the applied radioactivity after 4 days in three different soils with DT-50 values in the range of 0.5 to 6.5 hours .
Key value for chemical safety assessment
- Half-life in soil:
- 6.5 h
- at the temperature of:
- 20 °C
Additional information
In two GLP studies (according to EPA 540/9-82-021, Subdivision N, Section 162-1 and German BBA guideline Part IV, 4-1) the test substance was mineralized to C02 in four soils to >70% of the applied radioactivity after 4 days.
Depending on the type of soil, the DT-50 values were 0.48, 0.96, 2.20 and 6.48 hours. The geometric mean of these half-lifes was 1.6 hours.
Only two metabolites reached levels above 10% of the applied radioactivity. Their maximum value was at the first day and amounted to < 2 % after day 4.
The microbial biomass was not influenced by the test substance nor by its degradation products.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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