Registration Dossier
Registration Dossier
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EC number: 930-964-6 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Monochloroacetic acid: weight of evidence: Readily biodegradable (several studies conducted according to OECD-guidelines 301B-E). These results are also supported by the inherent biodegradation results since the substance was nearly 100% biodegraded and the estimations conducted with BIOWIN.
Methyl chloroacetate: Key study: Readily biodegradable: 61% after 8 days and 80% after 28 days (OECD 301F).
Key value for chemical safety assessment
Additional information
Reaction mass of methyl chloroacetate and chloroacetic acid:
1.- Monochloroacetic acid:
There are several studies available on ready biodegradability. These were conducted according to OECD-guidelines 301B-E. These results indicated that monochloroacetic acid is considered to be readily biodegradable. Furthermore, these results are also supported by the inherent biodegradation results since the substance was nearly 100% biodegraded and the estimations conducted with BIOWIN.
In three out of four anaerobic biodegradation tests with adapted methanogenic bacteria the substance monochloroacetic acid was > 86 % mineralised after 2 days, into methane, CO2 and chloride ions.
2.- Methyl chloroacetate:
Key study: Readily biodegradable: 61% after 8 days and 80% after 28 days (OECD 301F). Based on these results, it is concluded that the test substance methyl chloroacetate is readily biodegradable. This result is supported by further experimental data on readily biodegradabiliy (OECD 301E), experimental data on inherent biodegradability (OECD 302B) and estimated data (BIOWIN).
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