Registration Dossier
Registration Dossier
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EC number: 292-146-9 | CAS number: 90552-24-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 28 d
- Parameter followed for biodegradation estimation:
- O2 consumption
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 91
- Sampling time:
- 28 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 88
- Sampling time:
- 21 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 85
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 73
- Sampling time:
- 7 d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched) is ready biodegradable.
- Executive summary:
The ready biodegradability of 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched) was evaluated during a GLP-compliant study perform in accordance with the OECD Testing Guideline 301F (Manometric Respirometry).
Sodium acetate was used as reference substance.
Secondary effluent from domestic sewage treatment plant was used for the purpose of this study.
Oxygen consumption was evaluated on Day 0, 7, 14, 21 and 28.
Validation criteria were met.
On Day 7, 73% of the test substance had been ready biodegraded. Ready biodegradation reached 91% on Day 28.
It wasconcluded that 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched) is ready biodegradable.
Reference
Description of key information
The ready biodegradability of 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched) was evaluated during a GLP-compliant study perform in accordance with the OECD Testing Guideline 301F (Manometric Respirometry).
Sodium acetate was used as reference substance.
Secondary effluent from domestic sewage treatment plant was used for the purpose of this study.
Oxygen consumption was evaluated on Day 0, 7, 14, 21 and 28.
Validation criteria were met.
On Day 7, 73% of the test substance had been readily biodegradable. Ready biodegradation reached 91% on Day 28.
It was concluded that 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched) is ready biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
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