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EC number: 265-450-4 | CAS number: 65113-95-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
MTCP Crude is considered readily biodegradable based on read-across from an appropriate structural analogue.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
The ready biodegradability of the analogue substance, Ebanol, has been determined by the Respirometric Method (modified MITI Test I) according to the OECD Guidelines for Testing of Chemicals, Method No. 301F.
In the conditions of the test, Ebanol undergoes 66% biodegradation after 28 days. The 10-day window criterion is not quite fulfilled (only 58% after the 10 day window). However this criterion should not be applied as a pass / fail criterion for multi-constituent substances with structurally similar constituents (such as stereoisomers) and is therefore not applicable for Ebanol.
The curves obtained with the reference substance alone and with Ebanol + reference substance show no toxic effect of Ebanol to the micro-organisms at the test concentration (100 mg/l).
Thus, Ebanol should be regarded as readily biodegradable according to this test.
The biodegradation of Ebanol and MTCP crude are anticipated to be similar due to their similar carbon skeletons (for further details see read-across justification document, attached in section 13). Therefore MTCP crude is also considered to be readily biodegradable based on read-across from an appropriate structural analogue.
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