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Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Endpoint:
biodegradation in water: ready biodegradability
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Study period:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
Proposed criterion (USEPA 2004) for an overall YES or NO Ready Biodegradability prediction are as
follows: If Biowin3 (ultimate survey model) result is “weeks” or faster (e.g. days or days
to weeks) ≥2.75 AND Biowin5 (MITI linear model) ≥0.5, then the prediction is YES
(readily biodegradable). If this condition is not satisfied, the prediction is NO (not readily
biodegradable).
Qualifier:
according to guideline
Guideline:
other: REACH guidance on QSARs R.6 May 2008
Principles of method if other than guideline:
BIOWIN 3
Parameter:
other: BIOWIN 3
Value:
3.07
Remarks on result:
other: result corresponds to "Weeks"
Endpoint:
biodegradation in water: ready biodegradability
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Study period:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
Proposed criterion (USEPA 2004) for an overall YES or NO Ready Biodegradability prediction are as
follows: If Biowin3 (ultimate survey model) result is “weeks” or faster (e.g. days or days
to weeks) ≥2.75 AND Biowin5 (MITI linear model) ≥0.5, then the prediction is YES
(readily biodegradable). If this condition is not satisfied, the prediction is NO (not readily
biodegradable).
Guideline:
other: REACH Guidance on QSARs R.6, May 2008
Parameter:
other: BIOWIN 5
Value:
0.806
Remarks on result:
other: Result corresponds to "Biodegrades Fast"

Description of key information

The biodegradability of methyl 3 -methoxypropionate is estimated by Biowin.

Criteria for the YES or NO Ready Biodegradability prediction: If the Biowin3 (ultimate survey model) result is "weeks" or faster (i.e. "days", "days to weeks", or "weeks" AND the Biowin5 (MITI linear model) probability is >= 0.5, then the prediction is YES (readily biodegradable). If this condition is not satisfied, the prediction is NO (not readily biodegradable).

Methyl 3 -methoxypropionate results for Biowin3 in weeks and results for Biowin5 in 0.8. Therefore, methyl 3 -methoxypropionate is predicted to be readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information