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EC number: 234-042-8 | CAS number: 10508-09-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The study of the "ready" aerobic biodegradability of DI-TERT-AMYL PEROXIDE using the OECD method 301 D shows that this item reached a maximum biodegradation level of 7 % in 28 days and 10 % in 56 days. These values were calculated on the measured initial concentration of the test item in the medium. As a consequence, DI-TERT-AMYL PEROXIDE is not readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
Additional information
- The oxygen uptake of the inoculum blank has been: 0.9 mg O2/L in 56 days, which is below 1.5 mg O2/L.
- The residual concentration of oxygen did not fall below 0.5 mg/L at any time.
- The difference of extremes of replicate values of the removal of test chemical at the plateau, at the end of the test, or at the end of the 10-d window, was less than 20%.
- The percentage degradation of the reference item reached a level of 89% by 14 days which is above the required level of 60%.
- In the toxicity control flasks, containing both the reference item and DI-TERT-AMYL PEROXIDE, the percentage of biodegradation reached 48% after 14 days. Since this value is higher than 25%, the test tem is not inhibitory for inoculum
The study of the "ready" aerobic biodegradability of DI-TERT-AMYL PEROXIDE using the OECD method 301 D shows that this item reached a maximum biodegradation level of 7% in 28 days and 10 % in 56 days. These values were calculated on the measured initial concentration of the test item in the medium. As a consequence, DI-TERT-AMYL PEROXIDE is not readily biodegradable
The item did not demonstrate any inhibiting effect on the micro-organisms at the 2 mg/L nominal concentration (0.62 mg/L measured concentration)
The following quality criteria have been met:
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