Registration Dossier
Registration Dossier
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EC number: 700-420-0 | CAS number: 7605-52-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Key Study 1: Assessment of Ready Biodegradability by Respirometry by Huntingdon Life Sciences, IFF0416, 2009-03-25
Key Study 2: Biodegradation Test of M3MC-Carboxylate, Supervision and Test Center for Pesticide Safety Evaluation and Quality Control, G0940A0159, 2010-03-16
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable but failing 10-day window
Additional information
Key Study 1: Assessment of Ready Biodegradability by Respirometry by Huntingdon Life Sciences, IFF0416, 2009-03-25
Mean oxygen consumption in biotic mixtures containing M3MC-Carboxylate was equivalent to 10% of the theoretical value (50 mgO2/L) after approximately 7 days, 60% after approximately 19 days and 74% at the end of the test (Day 28). A biodegradation plateau was not achieved by the end of the test. Substances are considered to be readily biodegradable in this type of test if oxygen consumption is equal to or greater than 60% of the ThOD of the test mixtures within ten days of the consumption achieving 10%. Therefore, M3MC-Carboxylate was not considered to be readily biodegradable. However, as biodegradation of the test substance exceeded 60% by Day 28, M3MC-Carboxylate was considered to be ultimately biodegradable under the conditions of the test.
Key Study 2: Biodegradation Test of M3MC-Carboxylate, Supervision and Test Center for Pesticide Safety Evaluation and Quality Control, G0940A0159, 2010-03-16
Based on these results and the grading criteria in the Guidelines for the Hazard Evaluation of New Chemical Substances, State Environmental protection Agency of P.R.C(HJ/T 154/2004), the test substance, M3MC-Carboxylate met criteria for "ready biodegradablity" under the test conditions.
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